Year 2 Term 2 Week 3 Lesson 4 Understanding Addition and Subtraction

Lesson 4: Week 3
Title Understanding Addition and Subtraction

Learning Objective:
 add
 use the words to describe adding
 partition into ‘10 and a bit’
 know adding can be done in any order
 use patterns of similar calculations.

Mental Warm Up:
Sit in a circle. You will be given a number card 1–19. Put it in front of you. Let everyone see your card.Can you see whose card added to yours would make 20? Put up your hand. Tell me who has the card you need. What number is on it?

Main Lesson Idea:
Today we are going to be adding a teens number to a two-digit number by breaking them up into tens and ones.

Educational Challenges
 Practise adding a two-digit number and a teens number. Make up some number sentences of your own.
 Sort number sentence cards into those which are correct and those which are wrong, using base 10 apparatus.
 Practise adding a two-digit number and a teens number. Make up some number sentences of your own.