The abacus is an ancient tool for doing calculations. This activity uses a simplified abacus to teach place value. Each bead represents 1 in the given place, and students can use it to get a visual understanding that 10 beads in a given place (1s, 10s, 100s) can be represented by a single bead in the place to its left (10s, 100s, 1000s).
Idea Sheets are cross-referenced to subjects listed in the Common Core, Next Generation Science Standards, and California Content Standards.
- Grades K-2
- Grades 3-5