Using information about the shape-based number system on planet Efilar, students display the base 10 numbers for Efilar shapes. Students also display Efilar shapes from given base 10 numbers.
In this practical task students demonstrate their understanding of the meaning of 3 digit numbers by following oral instructions to create numbers on a calculator.
Students demonstrate their understanding of place value by identifying smallest and largest 3-digit money values, and by calculating the number of 10s in given amounts.