Primary Maths Exploring mental strategies used in KS 1

To explore…  Practical activities  New Curriculum expectations  Mental maths  Informal to formal strategies  Hopefully have some fun ! Aims of the session

Number facts

Counting Sticks

Let’s start with some maths!!

Addition and Subtraction End of KS 1 expectation:

Practical resources

Number bonds

Empty Number Line Progression Counting on and back using - Numbered lines Bead strings Partly numbered lines Number tracks

Counting On Not crossing tens boundary e.g Jumps of 10s and 1s Encourage children to become more efficient Add 3 in 1 jump Add 20 in 1 jump

Counting on Crossing tens boundary e.g Jumps of 10s and 1s Help children become more efficient:  Add 5 in jumps of 3 and 2 (bridging over 10)  Add 20 in 1 jump

Finding the difference: The language of subtraction

34 – 21= __________+9______________+ 4________ Subtraction on an empty number line Have a go: 54 – 32 = 71 – 24 = 345 – 231 =

 End of KS 1 expectations:  T Multiplication and division Times table knowledge by the end of Year 2: Children should know multiplication and division facts for 2, 5 and 10’s ….however….samples tests require knowledge of at least 3’s and 4’s too.

Counting stick Number lines Arrays Other resources used

Informal to Formal Model the practical (kinaesthetic & visaul), write the abstract (visual) and verbally explain (aural).

 Encourage number sense –  Look for near multiple  Near double  Number bonds  Missing box calculations to give understanding to the equality sign  Undoing Maths Essentials

Number sense

Questions?