Stage 4 : Advanced Counting(Counting On)
Stage Four: Advanced Counting (Counting On)
Students at this stage understand that the end number in a counting sequence measures the whole set and can relate the addition or subtraction of objects to the forward and backward number sequences by ones, tens, etc.
For example, instead of counting all objects to solve 6 + 5, the student recognises that “6” represents all six objects and counts on from there: “7 , 8 , 9, 10, 11.”
Students at this stage also have the ability to coordinate equivalent counts, such as “10, 20, 30, 40, 50,” to get $50 in $10 notes. This is the beginning of grouping to solve multiplication and division problems.
We are using unifix blocks to recognise groups of tens and ones. For example, 34 is 3 tens and 4 ones.
We are learning to add and subtract groups of 10s by playing a board game. e.g. two dice were rolled showing 40 and 50. Children then added the two numbers together and found the correct answer on the board.
The players have two or three minutes to write as many addition and subtraction equations as they can based around the digits on the game board.
These are a few examples of equations you can make on the 'Number Boggle'.
Green : 148=6 / Red : 3+4=7 / Blue 10+1=11
