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CodeHop Standards aligned coding for districts Tynker Gamified coding and apps Typing Easy to use typing for schools

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CodeHS Pro Comprehensive CS platform Certifications Industry based credentials for CTE Cyber Range Interactive environment for cybersecurity labs

AI
AI Creator Easily create lessons with AI Vibe Coding Guided AI coding for students Bool AI coding and prototyping

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Assignments Create & configure your course assignments Classroom Manage & organize your class Grading Streamline your grading workflow Academic Integrity Build a culture of honesty in your classroom QuizBuzz Run gamified, interactive quizzes with your class

Tools
Data Track & analyze student progress data Write Code Write, run, & debug code in a web-based IDE Integrations Connect CodeHS to your district's platform AI Tools The most complete AI toolkit in CS education LOGIC Measure student growth with pre- & posttests
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Customizable K-12 CS curriculum
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Professional Development

Online & in-person training to help teachers grow.
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Online PD Courses In-Person & Virtual Workshops AI PD Free PD Events

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Professional Development Online & In-Person Training for Teachers
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Online IDE

Write, run, & debug code right in your browser — no setup required.
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Curriculum
Course Catalog
AP CSA Labs
Explore
6. Digit Recognition Lab
6.1 Activity 1 - Measures of Similarity

AP Computer Science A Labs

Overview

Lesson 6.1 Activity 1 - Measures of Similarity

Activities

These are all the activities included in the lesson

6.1.1 Measures of Similarity

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District
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Platform

Assignments
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Curriculum

Course Catalog
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Tutorials
Digital Textbooks
AP CSA Hub
AI Curriculum

PD

Online PD Courses
In-Person PD Workshops
Virtual PD Workshops
Free PD Workshops
PD Cohorts
Teacher Certification Prep
Microcredentials
PD Membership

Programming Languages

New Sandbox Program
Javascript
Python
Java
HTML
C++
SQL
Karel

Resources

Why Computer Science
Why Cybersecurity
Why Learn AI
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Vibe Coding
Yes

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Coding LMS
Online IDE
CodeHS Pro
CodeHS Free
Computer Science Curriculum
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Professional Development
AI Creator
Typing
Cyber Range

Plans

CodeHS Pro
Start for Free
Get a Quote

Platform

Assignments
Classroom
Grading
Data
Write Code
Integrations
AI Tools
Academic Integrity

PD

Online PD Courses
In-Person PD Workshops
Virtual PD Workshops
PD Cohorts
Teacher Certification Prep
Microcredentials

Resources

Why Computer Science
Why Cybersecurity
Why Learn AI
Why Digital Literacy
Back to School Checklist
Case Studies
States
Testimonials
Tweets
CodeHS Blog
Read Write Code Book
Knowledge Base
Webinars
Student Projects
Career Center
Student Alumni

Use Cases

District
Schools
Teachers
CTE

Curriculum

Course Catalog
Project Catalog
AP Courses
Elementary
State Courses
Spanish Courses
Standards
Practice
Tutorials
Digital Textbooks
AP CSA Hub

Programming Languages

New Sandbox Program

Javascript
Python
Java
HTML
C++
SQL
Karel

CodeHS Has Everything

AI
Grading
Differentiation
Elementary
Assessments
Academic Integrity
Online IDE
Physical Computing
AP Courses
Vibe Coding
Yes

Company

About
Team
Careers
Privacy Center
AI Center
Terms
Privacy Policy
Security
Accessibility

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