Comparing numbers to 10

Comparing numbers to 10

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Students learn to compare amounts from 1 to 10 and they know when an amount is more or less.

K.CC.C.6

K.CC.C.7

The interactive whiteboard shows images of ladybugs and you ask the class where they see 4 ladybugs. You can also ask how many ladybugs are in the second box. Then show the dots on the interactive whiteboard. Students must count the dots and say how many there are.

Show a number of amounts on the interactive whiteboard and say that you don't always need to count to determine which one is more or less. Sometimes you can just see the difference. Point out to students that the way that the hedgehogs are presented look like the dots on dice. If you can't see which is more or less right away, you can count. Use the number line to 10. Using the number line you can compare which number is more or less by using their place in the number line. A number that comes first on the number line is less than a number that comes after on the number line. Practice comparing a few numbers as a class.

Check that students understand comparing numbers to 10 by asking the following questions:

- When is an amount more than another?

- How do you know if an amount is more or less?

The students first practice indicating which amount is more or less using the counting structure of dots on dice. They next practice with objects arranged in twos.

Discuss with students that it is important to be able to compare amounts. You then are able to determine who has more pets. Check that students know that you sometimes can just see which is more or less without counting. If you don't see it right away, you can count. Emphasize that you can use the number line to determine if a number is more or less. Hand out paper to the students and ask them to draw more marbles than are shown on the interactive whiteboard. Have students hold up their drawings to check their work. To practice with more and less, have the students work in pairs with two dice. They each throw a number and then need to determine which number is more and which is less. Have them explain their reasoning using the dots on the dice or by using the number line to 10.

Students who have difficulty comparing amounts can practice the number line to 10. They can also be supported by using blocks or other manipulatives.

You can use dice or use our digital dice tool!

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