Choose a mode
Fill the ones, tenths and hundredths jars with the − / + buttons (each jar's sand level shows that digit), then press Check
Fill the ones, tenths and hundredths jars with the − / + buttons (each jar's sand level shows that digit), then press Check
3D math game · Best for grades 4-5
Build a decimal number by filling sand jars in a lab
Filling ones, tenths, and hundredths highlights the value of each digit in a decimal number.
The game builds understanding of Decimals. Fill the ones, tenths and hundredths jars with the − / + buttons (each jar's sand level shows that digit), then press Check
ones, tenths, and hundredths in decimal numbers.
Students build the number through digits and place value.
Each digit’s value becomes easier to understand.
Use it for individual practice, paired work, or a short class demonstration before worksheets.
Start with the game above, then continue with written practice to reinforce the skill.