Included:
- Full-size pan balance - draw a heavier and lighter item
- Full-size pan balance with 'The ______ is heavier.' or 'The _______ is lighter'.
- 4 smaller pan balances - draw a heavier and lighter item on each balance.
- Full-size pan balance - draw two items with a similar mass.
- 4 smaller pan balance - draw items with similar masses on each balance.