Odd and even numbers up to 100

This lesson was contributed by:

Analisa Magro

This lesson is for:

Lesson Duration:

60 mins.

What should you expect from this lesson?

Student will recognise odd and even numbers up to 100 first by pairing concrete objects and then by recognising the pattern on the number grid. Once understanding this pattern, the student will be able to determine whether a number is even or odd without using concrete objects or referring to the grid.

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How to carry out this lesson at home:

Resources: Mitten cut-outs (click HERE) OR 30 small objects for counting ( bottle caps, sticks, pom poms, pasta shapes, blocks etc)

NOTE: Ideally this lesson is done after place value lessons as it refers to the last digit in the number as ones.

Introduction: Today’s lesson about ordinal numbers will start off with the story called Missing Mittens by Stuart J. Murphy. The story will introduce the concept of odd and even. Even numbers are numbers which can be paired in twos. Odd numbers are numbers which will have 1 left over when paired in twos. Watch the story through this  link.

Lesson Development:
Print and cut out the mitten cut-outs (click HERE) . Try and pair up each number of mittens, starting from 1, to see if the number is even or odd.
Ask child: Is 1 an even or an odd number? Let’check. Can we make a pair out of this number? No, so it is an odd number.
Is 2 an even or an odd number? Let’s check. Can we make a pair out of this number? Yes, so it is an even number.
Is 3 an even or odd number? Let’s check. Can we make a pair out of this number? We did make one pair but we have 1 left over. If there an any mittens left over, it is an odd number.
Continue with numbers up to 10

Open this link below and choose grid 1-100.

Ask child to paint the odd numbers yellow and the even numbers blue (only up to ten, what you have discovered with the mittens so far. If child is unsure, hand over mittens again to check.
To determine whether the numbers beyond 10 are odd or even use your counting objects and follow the same process i.e. try and pair up all objects. If you pair them up without any left overs the number is even. If you have any left overs, the number is odd. Paint each number in the grid.
It should look as below when you’re done:

Do you notice a pattern? Discuss with child.
All numbers with 1, 3, 5, 7 , 9 in the ones column are odd, all numbers with 2, 4, 6, 8, 10 in the ones column are even. So if we know the first five odd numbers (1, 3, 5, 7, 9) and the first five even numbers (2, 4, 6, 8, 10) we can determine whether any number is odd or even by just looking at the ones number e.g. 67 is odd since it has 7 in the ones column, even though the other digit is even. We are able to do it for even larger numbers: 574 is even because the ones digit (4) is even, even though the hundreds (5) and the tens (7) are odd. A digit ending in 0 is an even number since like ten it can be paired up too.

Using this pattern continue colouring the numbers which are even and odd on the grid up to 100. The finished grid should look like this. Do you notice the pattern (columns of numbers ending in the same digit e.g last column all end in 0).

Conclusion: For some practise one can play the game in the link below. Set the game at 1-100. You may wish to take it slower and first set the game at 1-50, and then eventually move up to numbers up to 100.  For game click HERE.

All the resources you need to carry out this lesson at home:

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