Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Flip & Rotate Shapes
A fun math app for kids to visually learn shape transformations! Slide, flip, and rotate a flag 90° to see how its position and direction change.
GCD & LCM
A fun, visual math app to learn GCD and LCM! Use Venn diagrams, multiples, and a bus timeline to easily grasp these concepts.
Circles and Pi
A friendly elementary math app to visually explore circles and pi! Discover radius and diameter, roll a circle to see its circumference, and learn why pi (π) is always about 3.14.
Division
Learn division visually! Share or group cookies to understand quotients, remainders, and how multiplication and division work together.
Averages
A fun math app where kids visualize averages by leveling bars, watching the average line move, and solving puzzles!
3D Building Blocks
An elementary math app to build spatial skills! Tap to stack 3D blocks, view them from the top, front, and side, and guess the total number including hidden ones.
Decimal (0.1 & 0.01) Playground
An elementary math app for learning decimals (0.1 & 0.01) using a 100-grid. Color in squares (0.01) and rows (0.1) to build decimals like 0.37, compare sizes side-by-side to see that 0.3 is bigger than 0.25, and practice addition by carrying over to 1 when the grid is full!
Balance Scale Math
Learn the meaning of the equal sign (=) and solve missing-number (□) puzzles to build early math and equation skills!
Create Graphs
An elementary math app where you learn to display and read data! Create a bar graph of favorite fruits to find the most and least popular, change it to a pictograph to see what 1 picture represents, and draw a line graph of temperatures to track changes. Use −/+ and dots to watch the graph update instantly!
Find Prime Numbers
An elementary math app to find prime numbers from 1 to 100 using the Sieve of Eratosthenes. Cross out multiples starting from the smallest prime, leaving only primes in green (there are 25 from 1 to 100!). Learn to tell primes (with 2 factors) from composite numbers, and practice with a fun quiz!
Patterns & Coin Toss Probability
An elementary math app where you explore repeating patterns and learn probability by flipping coins! Create colorful patterns to predict what is next, and toss a coin up to 1000 times to see the heads ratio approach 50%.
Angles, Ratios & Patterns Playground
Learn three fun math concepts in one place! Measure angles with a protractor, simplify ratios to find percentages (%), and guess the next number in cool patterns.
Shape Area Discovery
Discover area formulas for rectangles, parallelograms, and triangles by cutting, moving, and combining shapes with fun interactive sliders!
Mirror Symmetry Art
Color on one side and watch a mirror image appear on the other! Create beautiful symmetrical patterns and learn about line and point symmetry with fun puzzles.
Number Line Jump 🐸
Make the frog jump on the number line to learn addition and subtraction! Solve equations, reach target numbers, and naturally discover negative numbers.
Learn the Analog Clock
Spin the hour and minute hands to learn how to tell time! This fun math app reads the time aloud, explains it step-by-step, and has exciting clock-setting challenges.
Fraction Playground
Create fractions with pizza and bars, compare sizes, find equivalent fractions, and add them up! Tap slices to color and easily visualize fraction concepts.