A girl is measuring the chalkboard using a yardstick. There are conversions written on the board.

Students work on math in front of the class using an early abacus and writing on the chalkboard.

Three students playing a math game in the classroom, throwing beanbags into a circle and doing multiplication…

Three students work from using dots as counters in columns (left) to writing the symbolic number (right).

A cartoon of a schoolteacher and a young boy, who is holding open a book. A chalkboard decorates the…

A teacher watches a group of students weighing apples and writing out measurement problems on the chalkboard.