What can you balance?
Drag objects into either bucket. Or tap an object, then a bucket.
Empty and level
Choose something from the shelf below.
Object shelf
Tap an item in a bucket to return it.Teacher notes
Ask: “Which side will go down? How can you make it balance?” A lower bucket has greater mass. In the challenge, balance the object using one type of block, then enter how many blocks you used.
All small blocks have equal mass; each medium block has the mass of 2 small blocks, and each large block has the mass of 4 small blocks. Measure the same object again with a different unit: the count changes, but its mass stays the same.
Different units can physically balance an object, but adding their counts does not give a measurement in one uniform unit. Use blocks of the same size and mass for this activity. These are invented masses, not real-world measurements. Each challenge object may have a different mass.
Buckets have a 6 × 4 space limit. Objects settle into free spaces and cannot overlap or pile up indefinitely. This is a simplified classroom model, not a realistic physics simulation. Tap controls and keyboard selection are available alongside dragging.