diff --git a/.github/.keep b/.github/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/.github/workflows/classroom.yml b/.github/workflows/classroom.yml
new file mode 100644
index 00000000..694e0c44
--- /dev/null
+++ b/.github/workflows/classroom.yml
@@ -0,0 +1,67 @@
+name: Autograding Tests
+'on':
+- workflow_dispatch
+- repository_dispatch
+permissions:
+  checks: write
+  actions: read
+  contents: read
+jobs:
+  run-autograding-tests:
+    runs-on: ubuntu-latest
+    if: github.actor != 'github-classroom[bot]'
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+    - name: Setup
+      id: setup
+      uses: classroom-resources/autograding-command-grader@v1
+      with:
+        test-name: Setup
+        setup-command: sudo -H pip3 install -qr requirements.txt; sudo -H pip3 install
+          flake8==5.0.4
+        command: flake8 --ignore "N801, E203, E266, E501, W503, F812, E741, N803,
+          N802, N806" minitorch/ tests/ project/; mypy minitorch/*
+        timeout: 10
+    - name: Task 0.1
+      id: task-0-1
+      uses: classroom-resources/autograding-command-grader@v1
+      with:
+        test-name: Task 0.1
+        setup-command: sudo -H pip3 install -qr requirements.txt
+        command: pytest -m task0_1
+        timeout: 10
+    - name: Task 0.2
+      id: task-0-2
+      uses: classroom-resources/autograding-command-grader@v1
+      with:
+        test-name: Task 0.2
+        setup-command: sudo -H pip3 install -qr requirements.txt
+        command: pytest -m task0_2
+        timeout: 10
+    - name: Task 0.3
+      id: task-0-3
+      uses: classroom-resources/autograding-command-grader@v1
+      with:
+        test-name: Task 0.3
+        setup-command: sudo -H pip3 install -qr requirements.txt
+        command: pytest -m task0_3
+        timeout: 10
+    - name: Task 0.4
+      id: task-0-4
+      uses: classroom-resources/autograding-command-grader@v1
+      with:
+        test-name: Task 0.4
+        setup-command: sudo -H pip3 install -qr requirements.txt
+        command: pytest -m task0_4
+        timeout: 10
+    - name: Autograding Reporter
+      uses: classroom-resources/autograding-grading-reporter@v1
+      env:
+        SETUP_RESULTS: "${{steps.setup.outputs.result}}"
+        TASK-0-1_RESULTS: "${{steps.task-0-1.outputs.result}}"
+        TASK-0-2_RESULTS: "${{steps.task-0-2.outputs.result}}"
+        TASK-0-3_RESULTS: "${{steps.task-0-3.outputs.result}}"
+        TASK-0-4_RESULTS: "${{steps.task-0-4.outputs.result}}"
+      with:
+        runners: setup,task-0-1,task-0-2,task-0-3,task-0-4
diff --git a/README.md b/README.md
index 62e4d6ba..82154e8f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+[![Open in Visual Studio Code](https://classroom.github.com/assets/open-in-vscode-2e0aaae1b6195c2367325f4f02e2d04e9abb55f0b24a779b69b11b9e10269abc.svg)](https://classroom.github.com/online_ide?assignment_repo_id=20081084&assignment_repo_type=AssignmentRepo)
 # MiniTorch Module 0
 
 <img src="https://minitorch.github.io/minitorch.svg" width="50%">
diff --git a/minitorch-env/bin/Activate.ps1 b/minitorch-env/bin/Activate.ps1
new file mode 100644
index 00000000..b49d77ba
--- /dev/null
+++ b/minitorch-env/bin/Activate.ps1
@@ -0,0 +1,247 @@
+<#
+.Synopsis
+Activate a Python virtual environment for the current PowerShell session.
+
+.Description
+Pushes the python executable for a virtual environment to the front of the
+$Env:PATH environment variable and sets the prompt to signify that you are
+in a Python virtual environment. Makes use of the command line switches as
+well as the `pyvenv.cfg` file values present in the virtual environment.
+
+.Parameter VenvDir
+Path to the directory that contains the virtual environment to activate. The
+default value for this is the parent of the directory that the Activate.ps1
+script is located within.
+
+.Parameter Prompt
+The prompt prefix to display when this virtual environment is activated. By
+default, this prompt is the name of the virtual environment folder (VenvDir)
+surrounded by parentheses and followed by a single space (ie. '(.venv) ').
+
+.Example
+Activate.ps1
+Activates the Python virtual environment that contains the Activate.ps1 script.
+
+.Example
+Activate.ps1 -Verbose
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and shows extra information about the activation as it executes.
+
+.Example
+Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
+Activates the Python virtual environment located in the specified location.
+
+.Example
+Activate.ps1 -Prompt "MyPython"
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and prefixes the current prompt with the specified string (surrounded in
+parentheses) while the virtual environment is active.
+
+.Notes
+On Windows, it may be required to enable this Activate.ps1 script by setting the
+execution policy for the user. You can do this by issuing the following PowerShell
+command:
+
+PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+
+For more information on Execution Policies: 
+https://go.microsoft.com/fwlink/?LinkID=135170
+
+#>
+Param(
+    [Parameter(Mandatory = $false)]
+    [String]
+    $VenvDir,
+    [Parameter(Mandatory = $false)]
+    [String]
+    $Prompt
+)
+
+<# Function declarations --------------------------------------------------- #>
+
+<#
+.Synopsis
+Remove all shell session elements added by the Activate script, including the
+addition of the virtual environment's Python executable from the beginning of
+the PATH variable.
+
+.Parameter NonDestructive
+If present, do not remove this function from the global namespace for the
+session.
+
+#>
+function global:deactivate ([switch]$NonDestructive) {
+    # Revert to original values
+
+    # The prior prompt:
+    if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
+        Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
+        Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
+    }
+
+    # The prior PYTHONHOME:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
+        Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
+    }
+
+    # The prior PATH:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
+        Remove-Item -Path Env:_OLD_VIRTUAL_PATH
+    }
+
+    # Just remove the VIRTUAL_ENV altogether:
+    if (Test-Path -Path Env:VIRTUAL_ENV) {
+        Remove-Item -Path env:VIRTUAL_ENV
+    }
+
+    # Just remove VIRTUAL_ENV_PROMPT altogether.
+    if (Test-Path -Path Env:VIRTUAL_ENV_PROMPT) {
+        Remove-Item -Path env:VIRTUAL_ENV_PROMPT
+    }
+
+    # Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
+    if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
+        Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
+    }
+
+    # Leave deactivate function in the global namespace if requested:
+    if (-not $NonDestructive) {
+        Remove-Item -Path function:deactivate
+    }
+}
+
+<#
+.Description
+Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
+given folder, and returns them in a map.
+
+For each line in the pyvenv.cfg file, if that line can be parsed into exactly
+two strings separated by `=` (with any amount of whitespace surrounding the =)
+then it is considered a `key = value` line. The left hand string is the key,
+the right hand is the value.
+
+If the value starts with a `'` or a `"` then the first and last character is
+stripped from the value before being captured.
+
+.Parameter ConfigDir
+Path to the directory that contains the `pyvenv.cfg` file.
+#>
+function Get-PyVenvConfig(
+    [String]
+    $ConfigDir
+) {
+    Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
+
+    # Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
+    $pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
+
+    # An empty map will be returned if no config file is found.
+    $pyvenvConfig = @{ }
+
+    if ($pyvenvConfigPath) {
+
+        Write-Verbose "File exists, parse `key = value` lines"
+        $pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
+
+        $pyvenvConfigContent | ForEach-Object {
+            $keyval = $PSItem -split "\s*=\s*", 2
+            if ($keyval[0] -and $keyval[1]) {
+                $val = $keyval[1]
+
+                # Remove extraneous quotations around a string value.
+                if ("'""".Contains($val.Substring(0, 1))) {
+                    $val = $val.Substring(1, $val.Length - 2)
+                }
+
+                $pyvenvConfig[$keyval[0]] = $val
+                Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
+            }
+        }
+    }
+    return $pyvenvConfig
+}
+
+
+<# Begin Activate script --------------------------------------------------- #>
+
+# Determine the containing directory of this script
+$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
+$VenvExecDir = Get-Item -Path $VenvExecPath
+
+Write-Verbose "Activation script is located in path: '$VenvExecPath'"
+Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
+Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
+
+# Set values required in priority: CmdLine, ConfigFile, Default
+# First, get the location of the virtual environment, it might not be
+# VenvExecDir if specified on the command line.
+if ($VenvDir) {
+    Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
+}
+else {
+    Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
+    $VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
+    Write-Verbose "VenvDir=$VenvDir"
+}
+
+# Next, read the `pyvenv.cfg` file to determine any required value such
+# as `prompt`.
+$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
+
+# Next, set the prompt from the command line, or the config file, or
+# just use the name of the virtual environment folder.
+if ($Prompt) {
+    Write-Verbose "Prompt specified as argument, using '$Prompt'"
+}
+else {
+    Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
+    if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
+        Write-Verbose "  Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
+        $Prompt = $pyvenvCfg['prompt'];
+    }
+    else {
+        Write-Verbose "  Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virtual environment)"
+        Write-Verbose "  Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
+        $Prompt = Split-Path -Path $venvDir -Leaf
+    }
+}
+
+Write-Verbose "Prompt = '$Prompt'"
+Write-Verbose "VenvDir='$VenvDir'"
+
+# Deactivate any currently active virtual environment, but leave the
+# deactivate function in place.
+deactivate -nondestructive
+
+# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
+# that there is an activated venv.
+$env:VIRTUAL_ENV = $VenvDir
+
+if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
+
+    Write-Verbose "Setting prompt to '$Prompt'"
+
+    # Set the prompt to include the env name
+    # Make sure _OLD_VIRTUAL_PROMPT is global
+    function global:_OLD_VIRTUAL_PROMPT { "" }
+    Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
+    New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
+
+    function global:prompt {
+        Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
+        _OLD_VIRTUAL_PROMPT
+    }
+    $env:VIRTUAL_ENV_PROMPT = $Prompt
+}
+
+# Clear PYTHONHOME
+if (Test-Path -Path Env:PYTHONHOME) {
+    Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
+    Remove-Item -Path Env:PYTHONHOME
+}
+
+# Add the venv to the PATH
+Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
+$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"
diff --git a/minitorch-env/bin/activate b/minitorch-env/bin/activate
new file mode 100644
index 00000000..b1d6aee8
--- /dev/null
+++ b/minitorch-env/bin/activate
@@ -0,0 +1,70 @@
+# This file must be used with "source bin/activate" *from bash*
+# You cannot run it directly
+
+deactivate () {
+    # reset old environment variables
+    if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
+        PATH="${_OLD_VIRTUAL_PATH:-}"
+        export PATH
+        unset _OLD_VIRTUAL_PATH
+    fi
+    if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
+        PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
+        export PYTHONHOME
+        unset _OLD_VIRTUAL_PYTHONHOME
+    fi
+
+    # Call hash to forget past commands. Without forgetting
+    # past commands the $PATH changes we made may not be respected
+    hash -r 2> /dev/null
+
+    if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
+        PS1="${_OLD_VIRTUAL_PS1:-}"
+        export PS1
+        unset _OLD_VIRTUAL_PS1
+    fi
+
+    unset VIRTUAL_ENV
+    unset VIRTUAL_ENV_PROMPT
+    if [ ! "${1:-}" = "nondestructive" ] ; then
+    # Self destruct!
+        unset -f deactivate
+    fi
+}
+
+# unset irrelevant variables
+deactivate nondestructive
+
+# on Windows, a path can contain colons and backslashes and has to be converted:
+if [ "${OSTYPE:-}" = "cygwin" ] || [ "${OSTYPE:-}" = "msys" ] ; then
+    # transform D:\path\to\venv to /d/path/to/venv on MSYS
+    # and to /cygdrive/d/path/to/venv on Cygwin
+    export VIRTUAL_ENV=$(cygpath /home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env)
+else
+    # use the path as-is
+    export VIRTUAL_ENV=/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env
+fi
+
+_OLD_VIRTUAL_PATH="$PATH"
+PATH="$VIRTUAL_ENV/"bin":$PATH"
+export PATH
+
+# unset PYTHONHOME if set
+# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
+# could use `if (set -u; : $PYTHONHOME) ;` in bash
+if [ -n "${PYTHONHOME:-}" ] ; then
+    _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
+    unset PYTHONHOME
+fi
+
+if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
+    _OLD_VIRTUAL_PS1="${PS1:-}"
+    PS1='(minitorch-env) '"${PS1:-}"
+    export PS1
+    VIRTUAL_ENV_PROMPT='(minitorch-env) '
+    export VIRTUAL_ENV_PROMPT
+fi
+
+# Call hash to forget past commands. Without forgetting
+# past commands the $PATH changes we made may not be respected
+hash -r 2> /dev/null
diff --git a/minitorch-env/bin/activate.csh b/minitorch-env/bin/activate.csh
new file mode 100644
index 00000000..7051ddbf
--- /dev/null
+++ b/minitorch-env/bin/activate.csh
@@ -0,0 +1,27 @@
+# This file must be used with "source bin/activate.csh" *from csh*.
+# You cannot run it directly.
+
+# Created by Davide Di Blasi <davidedb@gmail.com>.
+# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
+
+alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; unsetenv VIRTUAL_ENV_PROMPT; test "\!:*" != "nondestructive" && unalias deactivate'
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+setenv VIRTUAL_ENV /home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env
+
+set _OLD_VIRTUAL_PATH="$PATH"
+setenv PATH "$VIRTUAL_ENV/"bin":$PATH"
+
+
+set _OLD_VIRTUAL_PROMPT="$prompt"
+
+if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
+    set prompt = '(minitorch-env) '"$prompt"
+    setenv VIRTUAL_ENV_PROMPT '(minitorch-env) '
+endif
+
+alias pydoc python -m pydoc
+
+rehash
diff --git a/minitorch-env/bin/activate.fish b/minitorch-env/bin/activate.fish
new file mode 100644
index 00000000..a3ed0a96
--- /dev/null
+++ b/minitorch-env/bin/activate.fish
@@ -0,0 +1,69 @@
+# This file must be used with "source <venv>/bin/activate.fish" *from fish*
+# (https://fishshell.com/). You cannot run it directly.
+
+function deactivate  -d "Exit virtual environment and return to normal shell environment"
+    # reset old environment variables
+    if test -n "$_OLD_VIRTUAL_PATH"
+        set -gx PATH $_OLD_VIRTUAL_PATH
+        set -e _OLD_VIRTUAL_PATH
+    end
+    if test -n "$_OLD_VIRTUAL_PYTHONHOME"
+        set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
+        set -e _OLD_VIRTUAL_PYTHONHOME
+    end
+
+    if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
+        set -e _OLD_FISH_PROMPT_OVERRIDE
+        # prevents error when using nested fish instances (Issue #93858)
+        if functions -q _old_fish_prompt
+            functions -e fish_prompt
+            functions -c _old_fish_prompt fish_prompt
+            functions -e _old_fish_prompt
+        end
+    end
+
+    set -e VIRTUAL_ENV
+    set -e VIRTUAL_ENV_PROMPT
+    if test "$argv[1]" != "nondestructive"
+        # Self-destruct!
+        functions -e deactivate
+    end
+end
+
+# Unset irrelevant variables.
+deactivate nondestructive
+
+set -gx VIRTUAL_ENV /home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env
+
+set -gx _OLD_VIRTUAL_PATH $PATH
+set -gx PATH "$VIRTUAL_ENV/"bin $PATH
+
+# Unset PYTHONHOME if set.
+if set -q PYTHONHOME
+    set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
+    set -e PYTHONHOME
+end
+
+if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
+    # fish uses a function instead of an env var to generate the prompt.
+
+    # Save the current fish_prompt function as the function _old_fish_prompt.
+    functions -c fish_prompt _old_fish_prompt
+
+    # With the original prompt function renamed, we can override with our own.
+    function fish_prompt
+        # Save the return status of the last command.
+        set -l old_status $status
+
+        # Output the venv prompt; color taken from the blue of the Python logo.
+        printf "%s%s%s" (set_color 4B8BBE) '(minitorch-env) ' (set_color normal)
+
+        # Restore the return status of the previous command.
+        echo "exit $old_status" | .
+        # Output the original/"old" prompt.
+        _old_fish_prompt
+    end
+
+    set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
+    set -gx VIRTUAL_ENV_PROMPT '(minitorch-env) '
+end
diff --git a/minitorch-env/bin/hypothesis b/minitorch-env/bin/hypothesis
new file mode 100755
index 00000000..a4e40210
--- /dev/null
+++ b/minitorch-env/bin/hypothesis
@@ -0,0 +1,7 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+import sys
+from hypothesis.extra.cli import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())
diff --git a/minitorch-env/bin/pip b/minitorch-env/bin/pip
new file mode 100755
index 00000000..4c43d3c4
--- /dev/null
+++ b/minitorch-env/bin/pip
@@ -0,0 +1,8 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())
diff --git a/minitorch-env/bin/pip3 b/minitorch-env/bin/pip3
new file mode 100755
index 00000000..4c43d3c4
--- /dev/null
+++ b/minitorch-env/bin/pip3
@@ -0,0 +1,8 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())
diff --git a/minitorch-env/bin/pip3.12 b/minitorch-env/bin/pip3.12
new file mode 100755
index 00000000..4c43d3c4
--- /dev/null
+++ b/minitorch-env/bin/pip3.12
@@ -0,0 +1,8 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+# -*- coding: utf-8 -*-
+import re
+import sys
+from pip._internal.cli.main import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())
diff --git a/minitorch-env/bin/py.test b/minitorch-env/bin/py.test
new file mode 100755
index 00000000..5ca4692f
--- /dev/null
+++ b/minitorch-env/bin/py.test
@@ -0,0 +1,7 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+import sys
+from pytest import console_main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(console_main())
diff --git a/minitorch-env/bin/pygmentize b/minitorch-env/bin/pygmentize
new file mode 100755
index 00000000..d58533af
--- /dev/null
+++ b/minitorch-env/bin/pygmentize
@@ -0,0 +1,7 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+import sys
+from pygments.cmdline import main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(main())
diff --git a/minitorch-env/bin/pytest b/minitorch-env/bin/pytest
new file mode 100755
index 00000000..5ca4692f
--- /dev/null
+++ b/minitorch-env/bin/pytest
@@ -0,0 +1,7 @@
+#!/home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env/bin/python3
+import sys
+from pytest import console_main
+if __name__ == '__main__':
+    if sys.argv[0].endswith('.exe'):
+        sys.argv[0] = sys.argv[0][:-4]
+    sys.exit(console_main())
diff --git a/minitorch-env/bin/python b/minitorch-env/bin/python
new file mode 120000
index 00000000..b8a0adbb
--- /dev/null
+++ b/minitorch-env/bin/python
@@ -0,0 +1 @@
+python3
\ No newline at end of file
diff --git a/minitorch-env/bin/python3 b/minitorch-env/bin/python3
new file mode 120000
index 00000000..ae65fdaa
--- /dev/null
+++ b/minitorch-env/bin/python3
@@ -0,0 +1 @@
+/usr/bin/python3
\ No newline at end of file
diff --git a/minitorch-env/bin/python3.12 b/minitorch-env/bin/python3.12
new file mode 120000
index 00000000..b8a0adbb
--- /dev/null
+++ b/minitorch-env/bin/python3.12
@@ -0,0 +1 @@
+python3
\ No newline at end of file
diff --git a/minitorch-env/bin/ruff b/minitorch-env/bin/ruff
new file mode 100755
index 00000000..eb5b6c96
Binary files /dev/null and b/minitorch-env/bin/ruff differ
diff --git a/minitorch-env/lib64 b/minitorch-env/lib64
new file mode 120000
index 00000000..7951405f
--- /dev/null
+++ b/minitorch-env/lib64
@@ -0,0 +1 @@
+lib
\ No newline at end of file
diff --git a/minitorch-env/pyvenv.cfg b/minitorch-env/pyvenv.cfg
new file mode 100644
index 00000000..0c939c1c
--- /dev/null
+++ b/minitorch-env/pyvenv.cfg
@@ -0,0 +1,5 @@
+home = /usr/bin
+include-system-site-packages = false
+version = 3.12.3
+executable = /usr/bin/python3.12
+command = /usr/bin/python3 -m venv /home/zwjiang7/workspace/ai/mytorch/minitorch-module-0-XDjzw/minitorch-env
diff --git a/minitorch/module.py b/minitorch/module.py
index 0a66058c..c30155af 100644
--- a/minitorch/module.py
+++ b/minitorch/module.py
@@ -32,12 +32,16 @@ def modules(self) -> Sequence[Module]:
     def train(self) -> None:
         """Set the mode of this module and all descendent modules to `train`."""
         # TODO: Implement for Task 0.4.
-        raise NotImplementedError("Need to implement for Task 0.4")
+        self.training = True
+        for moudle in self._modules.values():
+            moudle.train()
 
     def eval(self) -> None:
         """Set the mode of this module and all descendent modules to `eval`."""
         # TODO: Implement for Task 0.4.
-        raise NotImplementedError("Need to implement for Task 0.4")
+        self.training = False
+        for moudle in self._modules.values():
+            moudle.eval()
 
     def named_parameters(self) -> Sequence[Tuple[str, Parameter]]:
         """Collect all the parameters of this module and its descendents.
@@ -48,12 +52,25 @@ def named_parameters(self) -> Sequence[Tuple[str, Parameter]]:
 
         """
         # TODO: Implement for Task 0.4.
-        raise NotImplementedError("Need to implement for Task 0.4")
+        result = []
+        for name, param in self._parameters.items():
+            result.append((name, param))
+
+        for prefix, moudle in self._modules.items():
+            for name, param in moudle.named_parameters():
+                result.append((f"{prefix}.{name}",param))
+
+        return result
+           
+
 
     def parameters(self) -> Sequence[Parameter]:
         """Enumerate over all the parameters of this module and its descendents."""
         # TODO: Implement for Task 0.4.
-        raise NotImplementedError("Need to implement for Task 0.4")
+        result = list(self._parameters.values())
+        for module in self._modules.values():
+            result.extend(module.parameters())
+        return result
 
     def add_parameter(self, k: str, v: Any) -> Parameter:
         """Manually add a parameter. Useful helper for scalar parameters.
diff --git a/minitorch/operators.py b/minitorch/operators.py
index 37cc7c09..06b6a842 100644
--- a/minitorch/operators.py
+++ b/minitorch/operators.py
@@ -32,9 +32,86 @@
 # $f(x) = |x - y| < 1e-2$
 
 
-# TODO: Implement for Task 0.1.
+def mul(x: float, y: float) -> float:
+    return x * y
 
+def id(x: float) -> float:
+    return x
 
+def add(x: float,y: float)-> float:
+    return x + y
+
+def neg(x: float) -> float:
+    return -x
+
+def lt(x:float,y:float):
+    return 1.0 if x<y else 0.0
+
+def eq(x: float,y: float):
+    return 1.0 if x == y else 0.0
+
+def max(x: float,y: float):
+    return x if x > y else y
+
+def is_close(x: float,y: float) -> float:
+    return abs(x - y) < 1e-2
+
+def sigmoid(x: float) -> float:
+    if x >= 0:
+        return 1.0 / (1.0 + math.exp(-x))
+    else:
+        return math.exp(x) / (1.0 + math.exp(x))
+ 
+def relu(x: float) -> float:
+    return x if x > 0 else 0.0
+
+def log(x: float) -> float:
+    return math.log(x)
+
+def exp(x: float) -> float:
+    return math.exp(x)
+
+def log_back(x: float,d: float) -> float:
+    return d / x
+
+def inv(x: float) -> float:
+    return 1.0 / x
+
+def inv_back(x: float, d: float) -> float:
+    return -d / (x * x)
+
+def relu_back(x: float, d: float)-> float:
+    return d if x > 0.0 else 0.0
+
+def map(fn: Callable[[float], float], lst: Iterable[float]) -> Iterable[float]:
+    return [fn(x) for x in lst]
+
+def zipWith(fn: Callable[[float], float], lst1: Iterable[float], lst2:Iterable[float]) -> Iterable[float]:
+    return [fn(x1, x2) for x1, x2 in zip(lst1, lst2)]
+
+def reduce(fn: Callable[[float, float], float], lst: Iterable[float]) -> float:
+    lst = list(lst)  # 转为 list 以便取第一个
+    if len(lst) == 0:
+        return 0.0
+    if len(lst) == 1:
+        return lst[0]
+    result = lst[0]
+    for i in range(1, len(lst)):
+        result = fn(result, lst[i])
+    return result
+
+def negList(lst: Iterable[float]) -> Iterable[float]:
+    return map(neg, lst)
+
+def addLists(lst1: Iterable[float], lst2: Iterable[float]) -> Iterable[float]:
+    return zipWith(add, lst1, lst2)
+
+
+def sum(lst: Iterable[float]) -> float:
+    return reduce(add, lst)
+
+def prod(lst: Iterable[float]) -> float:
+    return reduce(mul, lst)
 # ## Task 0.3
 
 # Small practice library of elementary higher-order functions.
diff --git a/tests/test_operators.py b/tests/test_operators.py
index f6e555af..b780dabb 100644
--- a/tests/test_operators.py
+++ b/tests/test_operators.py
@@ -108,7 +108,17 @@ def test_sigmoid(a: float) -> None:
     * It is  strictly increasing.
     """
     # TODO: Implement for Task 0.2.
-    raise NotImplementedError("Need to implement for Task 0.2")
+    s=sigmoid(a)
+
+    assert 0.0 <= s <= 1.0
+
+    assert_close(1.0 - s, sigmoid(-a))
+
+    if a == 0:
+        assert_close(s, 0.5)
+
+    if a < 10:
+        assert sigmoid(a) < sigmoid(a + 1e-3)
 
 
 @pytest.mark.task0_2
@@ -116,7 +126,8 @@ def test_sigmoid(a: float) -> None:
 def test_transitive(a: float, b: float, c: float) -> None:
     """Test the transitive property of less-than (a < b and b < c implies a < c)"""
     # TODO: Implement for Task 0.2.
-    raise NotImplementedError("Need to implement for Task 0.2")
+    if lt(a, b) == 1.0 and lt(b, c) == 1.0:
+        assert lt(a, c) == 1.0
 
 
 @pytest.mark.task0_2
@@ -125,7 +136,9 @@ def test_symmetric() -> None:
     gives the same value regardless of the order of its input.
     """
     # TODO: Implement for Task 0.2.
-    raise NotImplementedError("Need to implement for Task 0.2")
+    for i in range(-10, 11):
+        for j in range(-10, 1):
+            assert_close(mul(i,j), mul(i,j))
 
 
 @pytest.mark.task0_2
@@ -134,14 +147,19 @@ def test_distribute() -> None:
     :math:`z \times (x + y) = z \times x + z \times y`
     """
     # TODO: Implement for Task 0.2.
-    raise NotImplementedError("Need to implement for Task 0.2")
-
+    for x in range(-5, 6):
+        for y in range(-5, 6):
+            for z in range(-5, 6):
+                left = mul(z, add(x, y))
+                right = add(mul(x, z), mul(y, z))
+                assert_close(left, right)
 
 @pytest.mark.task0_2
 def test_other() -> None:
     """Write a test that ensures some other property holds for your functions."""
     # TODO: Implement for Task 0.2.
-    raise NotImplementedError("Need to implement for Task 0.2")
+    for x in range(-10, 11):
+        assert_close(neg(neg(x)), float(x))
 
 
 # ## Task 0.3  - Higher-order functions
@@ -169,7 +187,9 @@ def test_sum_distribute(ls1: List[float], ls2: List[float]) -> None:
     is the same as the sum of each element of `ls1` plus each element of `ls2`.
     """
     # TODO: Implement for Task 0.3.
-    raise NotImplementedError("Need to implement for Task 0.3")
+    sum1_plus_sum2 = sum(ls1) + sum(ls2)
+    sum_of_add_lists = sum(addLists(ls1, ls2))
+    assert_close(sum1_plus_sum2, sum_of_add_lists)
 
 
 @pytest.mark.task0_3