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
Practice organic chemistry with multiple-choice questions
Practice organic chemistry with multiple-choice questions that mimic exam formats. Track scores and progress during each session. Use 50/50 and hint lifelines to narrow answers. Receive instant feedback and explanations after each question.