problem What's My Weight? Age 7 to 11 Challenge level There are four equal weights on one side of the scale and an apple on the other side. What can you say that is true about the apple and the weights from the picture?
problem Buying a Balloon Age 7 to 11 Challenge level Lolla bought a balloon at the circus. She gave the clown six coins to pay for it. What could Lolla have paid for the balloon?
problem Almost One Age 11 to 14 Challenge level Choose some fractions and add them together. Can you get close to 1?