How many shapes can you build from three red and two green cubes? Can you use what you've found out to predict the number for four red and two green?
An investigation that gives you the opportunity to make and justify predictions.
This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.
Can you guess the colours of the 10 marbles in the bag? Can you develop an effective strategy for reaching 1000 points in the least number of rounds?
Can you coach your rowing eight to win?
Can you decode the mysterious markings on this ancient bone tool?
Can you make a hypothesis to explain these ancient numbers?