To revise and reinforce the concept of odd and even numbers, ordinal and cardinal numbers, halving and doubling, addition and subtraction.

Materials

Whiteboard and markers

Handouts with exercises on odd, even, ordinal, cardinal numbers, halving, doubling, addition, subtraction

Warm-up

Ask the children to pronounce and identify numbers from 1 to 20. Write the numbers on the board and have the children point to the number if it is even or odd.

Ask the children to recite the properties of even numbers (can be divided by 2 without remainder, even number of elements in a set) and odd numbers (can be divided by 2 without remainder, odd number of elements in a set).

Direct Instruction

Introduce the concept of ordinal numbers and explain that they are used to show the order of things.

Show the children how to write the ordinal numbers from 1 to 20.

Introduce the concept of cardinal numbers and explain that they are used to quantify the amount of things.

Show the children how to write the cardinal numbers from 1 to 20.

Review the halving and doubling procedures for numbers up to 100.

Demonstrate how to add and subtract numbers up to 100.

Guided Practice

Have the children work in pairs and provide them with a set of cards with numbers on them.

Have them place the cards in order from 1 to 20.

Then have them use the chart to write the ordinal and cardinal numbers.

Next, have them use the math manipulatives to add and subtract numbers up to 100.

Independent Practice

Have the children work in groups and create a game using the math manipulatives to add and subtract numbers up to 100.

Have them present their game to the class and explain how to play it.

Closure:

Review the concepts learned during the lesson, including odd and even numbers, cardinal and ordinal numbers, halving and doubling, addition and subtraction.

Ask the children to share something they learned during the lesson.

Assessment:

Observe the children during the mini-LESSon and discussion, and take notes of their understanding of the concepts.

Collect the children's written work and review it to assess their understanding of the concepts taught during the lesson.

Ask the children a few questions to assess their understanding of the concepts taught during the lesson, e.g. "What is an odd number?" "What is an even number?".

Ask the children to reflect on what they learned during the lesson and share their thoughts with the class.

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