Objective

By the end of this lesson, you will be able to understand and perform arithmetic operations with decimals.

Materials and Prep

Materials: Pencil, paper, ruler

Prep: Review the concept of place value and basic arithmetic operations with whole numbers.

Activities

• Activity 1: Decimal Introduction - Begin by discussing the concept of decimals and their relation to fractions. Use visual aids if necessary to illustrate the concept.

• Activity 2: Decimal Addition and Subtraction - Practice adding and subtracting decimals using real-life examples such as money or measurements.

• Activity 3: Decimal Multiplication and Division - Introduce the methods for multiplying and dividing decimals. Use practical examples to demonstrate the application of these operations.

Seventh Grade Talking Points

• "Decimals are a way to express parts of a whole, just like fractions. They are used in everyday life, such as in money and measurements."
• "When adding or subtracting decimals, it's important to align the decimal points to ensure accuracy."
• "To multiply decimals, ignore the decimal points and perform the multiplication as if the numbers were whole, then place the decimal point in the answer."
• "When dividing decimals, move the decimal point in the divisor and dividend to make the divisor a whole number, then move the decimal point in the quotient to match the number of decimal places in the dividend."