Ordering quantities to 10

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Students learn to put the numbers 1 to 10 in order and know when a number is more or less.

K.CC.C.6

Discuss with students why it's important to be able to put numbers in the right order. Tell that you can put multiple amounts in order. You can, for example, compare who has the most marbles, and who has the least.

Ask a few students to stand in front of the class and divide them into groups. The rest of the class must indicate which group has more, and which group has less. To check that students understand this example, show the horses on the interactive whiteboard. Drag more horses to the second box.

Show a number of quantities on the interactive whiteboard. Tell students that they don't always have to count to know which quantity has more or less. Sometimes you can just see it. If you can't see it, then you count the amounts. Use the number line to 10. Using the number line, you can tell if a number has more or less than another number. If a number comes first on the number line, it is less than a number that comes after it. Say that you can count in different ways. Sometimes objects are grouped in pairs, or sometimes in groups of five. Explain that it is useful if you count using a specific structure. Practice putting numbers in the right order as a class from least to most and emphasize that you can use different ways of counting (skip counting in 2s or 5s).

Check that students understand putting quantities to 10 in order by asking the following questions:

- How do you put amounts in the right order?

- How do you know which is the least?

- How do you know which is the most?

- What can you use to help you figure out what order the amounts need to be in?

Students practice putting amounts in order, first by number, then in groups of 2, and then groups of 5. They then need to put quantities in order that are in groups or in a row.

Explain to students that it is important to be able to put amounts in the right order so you know who has the most or least of things, like marbles. Check that students know that sometimes you can just see which amount has more or less. If you can't see it, you have to count. Emphasize that you use the number line to help compare because the smaller number comes first on the number line, and the number after has more. TO check that students understand, there are a few more exercises on the interactive whiteboard to do together as a class. They have to complete a sequence with sweaters, and put a row of amounts in order from least to most.

Students who have difficulty putting amounts in order can practice with the number line to 10. Manipulatives like blocks can also help with visualizing amounts. Students who are ahead can already start comparing numbers to 10.

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Lesson

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