Games and Simulations
Matific

Engaging supplemental resource encourages conceptual understanding
Bottom Line: An engaging conceptual supplement for math lessons with easy-to-find standards-aligned activities.
ChessKid

The right combo of learning and play for chess fans at any level
Bottom Line: Whether learning, playing, or coaching, ChessKid has it all covered.
Kahoot! DragonBox Learn Chess

Gentle chess puzzle game ideal for young newbies
Bottom Line: For kids who are new to chess but want to learn how to play, this fun intro to the game provides a well-done tutorial combined with a light overarching storyline.
Polyup

Super-cute gamified calculator may confuse more than calculate
Bottom Line: Possibly a great tool for advanced students, but can be very confusing for teaching new concepts.
Action Math Baseball

A mathematical home run for baseball fans; less engaging for rookies
Bottom Line: Students use their math skills to solve challenging real-world sports problems.
GeoGebra

Create, share, and modify math models and simulations
Bottom Line: Free, open-source software that lets teachers build or adapt learning experiences to meet their kids' needs.
Adaptive Learning
DreamBox Learning Math

Individualized, game-based math adapts to kids' needs
Bottom Line: Great all-in-one program for math support and practice, with somewhat accurate adaptive tech.
LearnBop

Adaptive tutorial site helps kids tackle tough math concepts
Bottom Line: It's a great tool for filling in learning gaps and for individualizing learning; kids get practice that really helps them grasp concepts.
Mangahigh

Awesome, adaptive math games with a killer teacher dashboard
Bottom Line: Fantastic tool for flipped or blended classrooms, formative assessment, or extra practice in any setting.
ALEKS

Strong adaptive learning makes traditional math curriculum more useful
Bottom Line: For kids who crave a traditional mastery-style math learning experience and have good self-regulation skills, this is a great option.
Knowre

Boost math skills with personalized learning, targeted lesson support
Bottom Line: With adaptive features and solid support, it's a fantastic tool to support your instruction.
Supplemental Resources and Practice
Freckle

Standards-aligned, adaptive, core subject materials with lots of support
Bottom Line: It's rich with content-aligned assessments, worksheets, and progress analytics, so mindful teachers will find it a valuable resource to promote skills mastery through practice.
Khan Academy

Flexible learning environment offers goal-oriented personalized pathways
Bottom Line: A robust resource for targeted, individualized instruction in most standardized subject areas.
Mathletics

Content-rich math program that covers it all, from K to 12
Bottom Line: A wealth of mathematics instructional material with useful reporting features.
YummyMath

Make math matter with problems kids can relate to
Bottom Line: Yummy Math brings us 3rd-12th grade Common Core-aligned math activities on topics kids care about.
CueThink

Social approach to problem-solving promotes deep math learning
Bottom Line: An innovative, community-based platform that helps students plan, strategize, and collaborate.
Tuva Labs

Dynamic data-exploration tool offers large collection of data sets
Bottom Line: Partner with another teacher (preferably a data whiz) and work together to develop cross-curricular activities.
Algebra by Hand

Interactive tool focuses on process to create step-by-step solutions
Bottom Line: Good, focused practice for experienced students who have overcome the program's intricacies.
CanFigureIt Geometry

Flex your deductive reasoning muscles with geometric proofs
Bottom Line: A really good way for math students to learn about proofs and explore them from a number of angles.
CODAP

Drag and drop data to investigate nearly any subject
Bottom Line: A bit awkward to use, but far more engaging than traditional spreadsheet/graphing tools.
Mathigon

A beautiful, interactive twist on the classic math textbook
Bottom Line: A front-runner for a new generation of textbooks -- if they finish their course catalog and add more teacher resources.
Mathspace

Personalized, step-by-step math coaching challenges and adapts
Bottom Line: A solid, adaptive curriculum that guides kids as they work out problems.
Virtual Nerd

Flip a classroom with these free video math tutorials
Bottom Line: High-quality but monotonous math tutorials can be a good classroom supplement.
Get the Math

Solve real-life algebra problems with diverse crew, delightful video
Bottom Line: Proof that algebra is used to solve real problems in kid-approved professions: basketball, music, gaming, and fashion.
Brilliant

Challenge top students with self-guided math, science, and CS courses
Bottom Line: This learning and practice site can be an exciting challenge for passionate, independent students but may be too much for struggling kids.
Scratchwork

Intelligent collaborative whiteboard opens up new ways to create math
Bottom Line: This flexible tool is great for student groups to upload, manipulate, and share math projects.
Symbolab

All-too-easy tool for solving, and seeing, step-by-step math solutions
Bottom Line: A great visual tool for students and teachers to explore complex math equations, though some may use it just to get quick answers.