Tangram Puzzle - Online Drag & Match Shapes
Drag the seven tangram pieces to form a target silhouette. Multiple puzzles. Develop spatial thinking. All canvas interactions.
UD5 Toolkit
Drag the seven tangram pieces to form a target silhouette. Multiple puzzles. Develop spatial thinking. All canvas interactions.
Try to draw a perfect circle freehand. Score based on roundness. Fun and addictive. No data sent.
Choose colors and knot types to design a bracelet pattern. See visual guide. Save locally.
Choose colors and knots to design a friendship bracelet pattern. View the simulated final result.
Arrange preβdrawn comic panels into a strip. Add speech bubbles. Export as image. Fun for kids.
Play the extended 5βgesture version against a CPU. Rules explained. Score tracking. A geek classic.
Click grid to place beads, choose colors, generate a loom pattern. Download as image.
Drag pie slices to represent fractions and see them added together. Great for visual learners.
Draw perfect ellipses by dragging focal points and a point on the curve. See the equation update dynamically. Educational.
Create a virtual scratch card with a hidden message or prize. Send the link; recipient scratchs with mouse/touch. Canvas-based.
Calculate the area of an irregular polygon by entering its vertex coordinates. Uses the shoelace formula. Pure math.
Enter number of eyelet pairs and lacing style to find the correct shoelace length in inches/cm. Never buy too short.
Draw a 3D box or room interior by dragging vanishing points. Great for learning perspective drawing. Export as image.
Practice mental arithmetic with customizable operators and digit count. Timed rounds, score tracking. Works offline. Improve your brain speed.
Solve random arithmetic problems under a time limit. Track your score and improve mental calculation. No data collected.
Calculate board feet for dimensional lumber and generate a cut list with waste factor. Quick carpentry tool.
Design friendship bracelet patterns by placing forward and backward knots on a grid. See a visual preview of the finished bracelet.
Get a random tattoo concept with style and placement suggestion. For fun and inspiration only. Not real art.
Select two birth year animals to see a fun compatibility rating and description. Pure cultural entertainment.
Random shapes appear; compute the area mentally. Multiple choice. For middle schoolers.
Enter two names and get a playful love compatibility percentage. Purely for entertainment! All calculation happens instantly in your browser.
Answer 5 silly questions and get a fruit personality result with a description. Harmless fun, local only.
Create custom flashcards and review them with a simple spaced repetition algorithm. Data stored in your browser. No sign-up required.
Click cells to see patterns, highlight multiples. Visual way to learn multiplication. Print empty grid.
Apply a color tint overlay over text to see if it helps reading comfort. Trial for visual stress.
Compute probability for simple events, as well as permutations and combinations (nPr, nCr). Useful for statistics and game theory. Browser-based math.
Enter pins per roll and calculate total bowling score including strikes and spares. Supports 10 frames. Learn scoring rules visually.
Listen to two notes and identify the interval. Purely local Web Audio synthesis. Sharpen your relative pitch.
A kanji appears; you guess how many strokes it has. Learn stroke order awareness.
Estimate make probability of a putt based on distance and skill rating. For disc golf enthusiasts. Fun statistical tool, no data upload.