1
Matching to compare
Learner’s Book 1: Unit 1, p. 22
GoalCompare two sets by matching one object to one object, and say which set has more.
New words
compare · look at two sets to see how they are the same or differentmatch · pair one object with one objectmore · a bigger number of things
Explanation
When we compare two sets, we find out which one has more, which one has fewer, or if they are the same. First line the objects up in two rows. Then match each object in one row with one object in the other row, like a pair of shoes. If one row has an object with no partner, that row has more. The other row has fewer. You do not even need to count to see it!
Worked examples
Ali has 5 stars and Sara has 4 stars. Match them one to one. 4 pairs are made, and 1 star in Ali’s row has no partner. Ali has more.
We can match different things. 4 books and 6 pencils: every book gets a pencil, and 2 pencils have no book. There are more pencils.
Matching works with real things too. If every cup has a plate and no plate is left, there are the same number of cups and plates.
Class activity
Match up: take two small piles of things from home, for example 5 buttons and 3 stones. Put one button next to one stone, again and again, until one pile is finished. Which pile has some left over? That pile has more.
Practice
1
Match the two rows. Which row has more birds?
The bottom row (5 birds).
2
Match the two rows. Which row has more flowers?
The top row (7 flowers).
3
Mia has 3 balls and Leo has 3 balls. After matching, is any ball left over?
No. They have the same number.
4
After matching, one object in the second set has no partner. Which set has more?
The second set.