Lesson Plan : Introduction to Decimals

Teacher Name:
 Heinsman
Grade:
 Grade 4
Subject:
 Math

Topic:
 Decimals: Place value positions, writing decimals from fractions, and some key decimals to know.
Content:
 Vocabulary: tenths, hundredths, thousandths, decimal
Goals:
 Students will begin writing decimals in the correct place value positions. They will demonstrate an understanding of the relationship between fractions and decimals by converting some basic fractions into decimal form.
Objectives:
 SOL 4.4a - The student will read, write, represent, and identify decimals expressed thorugh thousandths.
Materials:
 Calculators (1 per student), Introduction to Decimals handouts, place value chart
Introduction:
 Place value chart- Review place value up to 1000 on the board and ask students where to put the comma. What might come after the comma (think of money). Today we are going to move left of the ones into decimals. We will learn the place value positions tenths, hundredths, and thousandths. Pass out place value charts.
Development:
 Pass out Introduction to Decimals handouts, and give each student a calculator. Remind them what happened when we had 4/4 or 7/7 as a fraction (it simplified to 1) Why did that happen? There is a relationship between fractions and decimals, because the line between the numerator and the denominator could be replaced with a division symbol. Show students how to convert 1/7 into a decimal using their calculators, and write the decimal on the board.
Practice:
 Split students into 5 groups by counting off. Let them work through the Introduction to Decimals handout and place value charts as a group. Each place value page should be labeled Tenths, Hundredths, or Thousandths. Let them work in groups dividing different numbers by 10, 100, and 1000 on their place value charts. They should then try to write rules for each position on their Intro to Decimals handout. Review these orally when completed.
Checking For Understanding:
 Homework: Reteach 26.1 (Practice Workbook)

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