Description 1. One-Digit Decimals 1. The Shape of Decimals 2. Reading Decimals 3. The Meaning of 0.1 4. From 0.1 to 1 5. 1.△ 6. Decimals and Natural Numbers 7. When There Are Many 0.1s 8. When There Are Several 0.△s Unit Wrap-up: Check with Word Problems Take a Break 2. Two-Digit Decimals 1. Classifying Numbers 2. 0.01 3. Two-Digit Decimals in Pictures 4. Two-Digit Decimals and the Number Line 5. When There Are Several 0.01s 6. 10 Times and 100 Times Two-Digit Decimals Unit Wrap-up: Check with Word Problems Take a Break 3. Three-Digit Decimals 1. Dividing 1 into 1000 Equal Parts 2. Three-Digit Decimals in Pictures 3. Three-Digit Decimals and the Number Line 4. When There Are Several 0.001s 5. Comparing the Size of Decimals 6. Decimal Place Values 7. Moving the Decimal Point Unit Wrap-up: Check with Word Problems Take a Break One More Time! Review