Explore and practise freely. Opening a lesson saves your starting point. Mark it complete after studying, pass its quizzes and submit its online worksheets. The writing pad does not save a score.
Prerequisite: count small sets. Explain that the plate still exists; zero describes the number of blocks, not every object in view.
Use large counters, blocks and paper before symbols. Revisit a lesson until the child can show and explain the idea. Numbers grow from 0–10 to 20, then 100; these pages are not a one-sitting course.
Count forwards and backwards across 100 from different starting points.