Bubble Blitz
Pop rising bubbles for letters, numbers, sight words, or phonics patterns across ten quick rounds with gentle feedback.
PlayThinker Studio
Explore fast, tactile experiments that turn abstract ideas into something you can poke, twist, and master.
Spotlight
Pop rising bubbles for letters, numbers, sight words, or phonics patterns across ten quick rounds with gentle feedback.
Play nowFeatured labs
Quick demos that show the newest mechanics in motion.
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Shape a mirror boundary, launch tracer rays, and watch them ricochet into loops, nets, or escapes under speed and trail controls.
Pop rising bubbles for letters, numbers, sight words, or phonics patterns across ten quick rounds with gentle feedback.
Fill the missing item in visual, symbol, letter, or number patterns with hints after misses and a nonstop stream of puzzles.
Solve tracing challenges with turtle commands or blocks, running and revising until the path matches the outline.
Move the full stack of disks from peg A to peg C, one disk at a time, never placing a larger disk on a smaller one.
Tap a light to toggle it and its neighbors. Can you turn the entire grid off in as few moves as possible?
Reveal every safe square without touching a mine. Numbers show how many mines are adjacent.
Slide numbered tiles into place with one empty space. Can you solve it in the fewest moves?
Rotate each pipe tile so water flows from the source to the sink.
Move the worker and push boxes onto all targets without getting stuck.
Use the clues to mark ✓ and ✕ until every person is matched correctly.
Jump pegs over each other to remove them, ending with one peg in the center.
Drop discs and connect four in any direction to win.
Place tents so each tree has exactly one adjacent tent and tents never touch.
Fill squares so each row and column matches the clue counts.
Place 1–4 in each row and column while respecting the inequality signs.
Place N queens so no queen attacks another.
Draw a single loop so each number matches the number of edges around it.
Connect island numbers with one or two bridges to form a single network.
Fill each run with digits so the sums match and no number repeats within a run.
Complete the path so consecutive numbers touch.
Draw paths that connect matching numbers without crossing.
Fill the grid by connecting each color pair with a continuous path.
Cover the grid with dominoes so every number pair appears exactly once.
Slide cars on a grid to clear a path for the target car to exit.
Move the 2x2 block to the exit by sliding other blocks out of the way.
Drag and rotate seven pieces to match outline targets.
Select three cards where every feature is all same or all different.
Guess the hidden color code with feedback pegs.
Place pentominoes to cover the 5x6 board.
Place weights to balance the target on the other pan.
Move the wolf, goat, and cabbage across without leaving unsafe pairs.
Move the knight so every square is visited exactly once.
Drag a right triangle and watch four visual proofs animate—rearrangements, dissections, similarity, and balance—all converging on a² + b² = c² without heavy algebra.
Roll live dice, build a histogram of totals, and compare your data to the theoretical curve with pauses, predictions, and resets.
Type formulas and watch curves appear instantly. Drag to pan, zoom with the wheel or buttons, and explore explicit or implicit equations.
Watch selection, insertion, bubble, merge, and quick sort transform a scrambled array into order, step by step.
Compare linear and binary search by stepping through every comparison, range update, and match.
Simulate a random walk and track displacement, total distance, and return-to-origin behavior.
Generate Sudoku puzzles by difficulty or solve your own puzzle one logical step at a time with explanations.
Explore partial sums of classic infinite series and see when they converge or diverge.
Step through an interactive sieve: pick a pivot, watch all its multiples fade, and see which numbers survive as primes.
Tighten upper and lower bounds for π by increasing polygon sides around a fixed circle—see perimeter and area estimates converge together.
Watch a circle’s area morph into rectangles and triangles: wedges stack into a πr by r rectangle, and peeled rings unfold into a 2πr by r triangle—both settling on πr².
Flip batches of coins, watch heads totals form a histogram, and pit each run against the binomial curve with pauses and resets.
Slide between fractions and percents as a pie and grid shade the same value and a simplified label proves equivalence.
Deal scattered or gridded dots at chosen totals, read the cluster size, and tap the count while streaks and accuracy track growth.
Tap products, quotients, or remainders on a reshaping array grid through 20-prompt sessions with instant advance.
Hop around the multiplication grid to answer multiplication, division, or factor prompts across quick 10-question rounds.
Break numbers into primes, then build GCD and LCM step by step with stacked factors and repeatable pairs.
Watch vertical addition, subtraction, multiplication, or division unfold step by step with pauses and resets.
Build evenly divided grids, apply repeating colors or simple patterns, and explore how rows, columns, and alternating layouts create rhythm.
Choose a curated tile, see it snap to its hidden square, triangle, or hex grid, and watch the whole screen tile seamlessly. Each tile offers only the repetition styles that fit its symmetry, so every click gives a complete, readable pattern.
Browse a big library of prism and pyramid nets, then see each solid unfold into a crisp 2D pattern with to-scale faces.
Fill, empty, and pour between two jugs to reach the exact target amount.
Swap tiles on 3×3, 4×4, or 5×5 grids so every row, column, and diagonal matches the target sum.
Combine equal tiles to reach 2048. Every move shifts the whole grid.
Fill 1–4 in each row and column while satisfying the cage operations.
Clear six visible pairs per round across literacy, word, emoji, time, and math packs in 10-round matching sessions.
Set a launch speed and direction, then watch a ball arc under gravity and bounce off the ground.
Watch a Sun–Earth–Moon model spin phases and eclipses with speed control, slowdown on alignments, and a scrubbable timeline.