Column subtraction: Lesson 1: dolphins

Further Challenges

• Choose your favourite dolphin species (spinner, bottle-nosed, pink river etc.) Find out what you can about this particular dolphin species and present your research as a fact file. Try to include lots of interesting number facts about your dolphin species such as its length, weight and population.
• Pretend to be a spinner dolphin by jumping into the air and turning around! Use this activity to remind yourself about quarter, half, three-quarter and full turns and how these turns relate to right angles.