Double Number Line Decimals Scaffolding Task: TASK CONTENT: Students order tenths and hundredths on a double number line. STANDARDS FOR MATHEMATICAL CONTENT MGSE4.NF.7 Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of the comparisons with the symbols >, =, or <, and justify the conclusions, e.g. by using a visual model. STANDARDS FOR MATHEMATICAL PRACTICE TO BE EMPHASIZED 1. Make sense of problems and persevere in solving them. 2. Reason abstractly and quantitatively. 4. Model with mathematics. 5. Use appropriate tools strategically. 6. Attend to precision. 7. Look for and make use of structure. BACKGROUND KNOWLEDGE A double number line is a visual model that can be used in a variety of ways. In this task, students will create a double number line that can be used to compare tenths and hundredths. The top line will show tenths while the bottom line shows hundredths. Students can compare decimals with tenths and hundredths using the double number line as they are still gaining the foundation of being able to move easily between tenths and hundredths.
Scaffolding Task: Double Number Line Decimals TASK CONTENT: Students order tenths and hundredths on a double number line. STANDARDS FOR MATHEMATICAL CONTENT MGSE4.NF.7 Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of the comparisons with the symbols >, =, or <, and justify the conclusions, e.g. by using a visual model. STANDARDS FOR MATHEMATICAL PRACTICE TO BE EMPHASIZED 1. Make sense of problems and persevere in solving them. 2. Reason abstractly and quantitatively. 4. Model with mathematics. 5. Use appropriate tools strategically. 6. Attend to precision. 7. Look for and make use of structure. BACKGROUND KNOWLEDGE A double number line is a visual model that can be used in a variety of ways. In this task, students will create a double number line that can be used to compare tenths and hundredths. The top line will show tenths while the bottom line shows hundredths. Students can compare decimals with tenths and hundredths using the double number line as they are still gaining the foundation of being able to move easily between tenths and hundredths.