Counting to 100 and Beyond

Mathematics can be fun and engaging. Students are unique and have different ways of learning, so giving them various opportunities to learn place value partitioning is important. Room 14 is counting the days that we have been at school. August 9, 2021 we would have been at school for 107 days. The students and I would like to share with you how we learn our place value partitioning. 

WALT: Know groupings within 100

Success Criteria: I can add hundreds, tens, and ones to show the number of days we have been at school.  

Use of digital slides to promote the problem-solving for being at school for 107 days -

  • How many hundreds?

  • How many tens?

  • How many ones?

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Students are grouped and provided with different materials - coloured ice block sticks, teddy bears, plastic blocks, lego boards with lego, and numicon to show, and be able to explain how they made the number 107. By using mixed ability groups, students can share and listen to each other's ideas. This relates to the key competencies of relating to others and participating and contributing. 

Ice block sticks

We have three plastic bags with ice block sticks in them. The first bag shows 10 bundles of 10 ice blocks sticks held together with elastic bands. This shows 10 groups of 10 makes 100. Our middle bag shows no ice block sticks, as we have no sets of ten in the number 107. Our last bag contains seven ice block sticks, showing 7 ones. When we get 10 ones, we put one ice block stick into the middle bag to represent the number 10. 

Teddy bears

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Miley, Mea, and Molly showing 10 groups of 10 and one group of 7

We made 10 groups of 10 to make 100 and one group of 7 to make 107

Miley, Mea and Molly

Plastic blocks

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Rosalie, Thomas, and Lisette making one long line of 107

How could we make the counting of 100 easier than counting all the blocks?

The students and I discussed using ‘groups of’. How many groups of 10s are in 100?

They agreed it was 10 groups. How could we show 107 with the blocks we have? 

Is this an easier way to count to 100?

The sets are far easier to count

Lisette

Much better than the long line of blocks to count

Rosalie

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Lego blocks and boards

Angus and I counted the number of dots going downwards on the lego boards. Angus worked out that we could count each row of 10. When he had 10 rows of ten, he added a lego block of 4 and a lego block of 3 to make 7.

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Angus showing his rows of 10 on the lego board

10 rows of 10 makes 100

Angus

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Grayson using a combination of a lego board and lego blocks

I can show you how I made 107

Grayson

Numicon

Lydia, Emma, and Anna found the Numicon set an easy visual way to show and understand 107.

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Easy, 10 sets of 10 and 1 set of 7

Lydia

Georgia and Anna using the laminated Numicon. They had 9 sets of 10, 2 sets of 5, 1 set of 5 and 2 sets of 1

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I  can use two 5’s to make 10. Then one 5 and two 1’s to make 7

Georgia

Using a variety of materials gives all students a way to show and understand the numbers relating to hundreds, tens, and ones that they find the easiest to use.

We will be focusing on Measurement. The students’ will participate in lots of fun hands-on activities that involve comparing and measuring in non standard units, length, area, volume, time and temperature.

Keywords - counting, hundreds, tens, ones, place value partitioning, number board, abacus, plastic blocks, lego boards, numicon, digital

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