Maths S2 Number: Practicing Adding and subtracting using different strategies

A simple lesson on number, following on from a powerpoint on number (several slides, emphasis on different ways to count on):

1. One group doing algorithms from the board. STRATEGY: using written algorithms
2. One group working with the teacher doing base 10 blocks: showing the teacher the answer to sums he gives them eg 213 + 38. STRATEGY: 
3. One group on the computers (2 per computer) playing 

• CMIT games: Darts Game, Addition Wheel http://www.curriculumsupport.education.nsw.gov.au/countmein/children.html
• Ambleside games: Addition machine, Subtraction machine http://www.amblesideprimary.com/ambleweb/mentalmaths/additiontest.html

The most popular board game was CMIT Darts Game. The algorithms on the board needed to be complemented by some harder ones for the early finishers.