Practice subitizing by recognizing dot patterns from 1 to 10. Choose patterns based on dice or 10-frames. Adjust display time and dot range. Use two colors for patterns. iPad version supports up to 20 dots and two 10-frames.
by Randy Hengst★ 5.01 ratingsEducationFreeData updated 2026-09-08
Learn about quantum mechanics concepts like atomic orbitals and quantum numbers. Explore electron behavior in atoms. Visualize probability distributions and energy levels. Track quantum number properties and their effects on electron configuration.
Play puzzle games like 15 puzzle, Sudoku, Columns, and 2048 with customizable difficulty. Solve match-three puzzles, connect dots, and navigate mazes. Drag and fit blocks to complete levels. Generate unique maps for Sudoku and 15 puzzle.
