Dedicated Year 1 resources for exploring numbers 15, 16, 17, 18, and 19, focusing on their place value structure (ten and ones), a key KS1 Maths objective. Activities employ the CPA approach to build conceptual understanding of the 'teen' numbers as ten and a part, promoting reasoning. This essential small step is crucial for achieving national curriculum mastery in place value to 20. The CS Maths Scheme provides structured Base 10 and ten frame representation.
Full step description and curriculum objectives