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Review: comparing, words and odd and even
Learner’s Book 1: Unit 1, pp. 22–35
GoalCompare sets with more, fewer and the same, read number words, and tell odd numbers from even numbers.
New words
more · a greater numberfewer · a smaller numberodd · a number that has 1 left over when put in pairseven · a number that can be put in pairs with none left over
Explanation
To compare two sets, match the objects one to one. The set with objects left over has more. The other set has fewer. If nothing is left over in either set, they have the same number. We can write numbers as words: one, two, three, four, five, six, seven, eight, nine, ten, and zero for 0. Even numbers can be put in pairs with none left over: 0, 2, 4, 6, 8, 10. Odd numbers always have 1 left over: 1, 3, 5, 7, 9. In the picture, even numbers are blue and odd numbers are orange.
Worked examples
The left set has 7 flowers and the right set has 5. 7 is more than 5, and 5 is fewer than 7.
Number words: 4 is four, 6 is six, 9 is nine, 10 is ten.
8 apples go into 4 pairs with none left over, so 8 is an even number.
Class activity
Pairs game: take a handful of buttons or beans (up to 10). Put them in pairs. Is there one left over? Say ‘odd’ or ‘even’. Then write the number as a word on a card. Play with a friend and compare: who has more, who has fewer?
Practice
1
Which set has fewer birds, the left or the right?
The left set (6 is fewer than 9).
2
Write the number word for 8.
eight
3
Is 7 odd or even?
Odd. There is 1 left over.
4
Write the number for the word ‘nine’.
9