As usual, begin with Gem Maths. Then play Fastest Finger, finding numbers from 1 to 90. How many can you find in one minute?
One More, One Less
Now we know our numbers to 100, we need to be able to say what one more or less is than any number in this range.
Under normal circumstances we would have used apparatus to physically make the numbers so children can understand and visualise what is happening when we find one more and one less. We would then move on to more abstract methods such as number tracks and hundred squares. The goal would be to be able to say one more or less without using any aids to help.
You should have a hundred square which you can use to help. Discuss which digit will change if we find one more or less. Depending on the number, the tens digit may change or it may not.
Below are some question you can ask when practising finding one more or less:
Give your child a number from 1-100. See if they can tell you what one more and one less is. Sue the questions above as a guide.
Please complete the science activity on the previous website page.