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Title: Decimals

Grade: 4-8

Description of Idea: Students will do various exercises related to identifying decimals and sorting them into different categories.

Expectations: Students should be able to understand when a decimal is close to the value 1, to the value 0, to 0.5. Being able to use these skills is important for estimating and ordering decimal calculations.

Student Groupings: This lesson plan is done in groups with 2 or 3 people per group.

Teaching Strategies:

Part 1: Introduction to decimal

Teacher asks students for money amounts that are less than 50 cents, and then writes the money amounts in different forms on the board. Therefore, students can see and understand that the different forms represent the same amounts.

Part 2: Students work in pairs

Teacher provides cue cards with various decimal amounts written on them. Students are then asked to sort the decimal cards that are less than 0.50, greater than .50, and between ½ and 6/10.

Assessment: The teacher can use a board exercise to assess how well students can categorize decimals, how they can determine which decimal is bigger, which is smaller, etc.

Adaptations: In this lesson plan teachers can start with easy decimal numbers and increase the decimal numbers by adding more numbers after or before the decimal. Example: 1.42, 2.34, 0.344, etc. Low proficiency ESL student’s will need a lot of visual representation to understand the concepts. Use play-money and coins to represent the concepts. Use money from the ESL students home country.

Source: Hope, Jack. McIntosh, Alistar. Reys, Barbara. Reys, Robert. Number sense: Simple Effective Number Sense Experiences. United States of America: Dale Seymour Publications, pg 103-105

Submitted by: Natalia Charles

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