Arm Span vs. Height

		Daily Practice and Problems	Lesson	Homework	Assessment
Student Books	Student Guide		Arm Span vs. Height Pages 34–41 Math Practices Reference	Arm Span vs. Height Page 41	Arm Span vs. Height Pages 34–41
	Student Activity Book		Plotting Points Pictures Pages 7–8
Teacher Resources	Teacher Guide - digital	DPP Item O DPP Item P DPP Item Q DPP Item R DPP Item S DPP Item T DPP Item U DPP Item V Centimeter and Inch Ruler	Centimeter Grid Paper 2 per student Four-Column Data Table Centimeter Graph Paper 4 per student	Centimeter Graph Paper Home Practice Part 6	DPP Item O Addition Test: Doubles, 2s, 3s DPP Item Q Addition Test: More Addition Facts DPP Item T Favorite Sandwiches Arm Span vs. Height Feedback Box one box per student More Arm Span vs. Height Data

Supplies for Student Groups

4 yardsticks or metersticks (with inches on one side) at each station (at least 3 stations are recommended)
rulers
calculators
red pen or marker
blank sheet of paper

Materials for the Teacher

Display of Jerome's Family: Hand Lengths and Heights Master (Teacher Guide)
1 prepared class data table (see Materials Preparation), Four-Column Data Table (Teacher Guide)
Display of Point Graph: What's Wrong Here? Master (Teacher Guide)
1 sheet of poster-size graph paper for class graph or display of Centimeter Graph Paper Master (Teacher Guide)
masking tape
Display of Math Practices (Student Guide) Reference
Unit 1 Assessment Record
Math Facts Class Record

Materials Preparation

Set Up Measurement Stations. Set up at least three Arm Span vs. Height stations for your students to collect data. Since students will measure in inches, you may use either yardsticks or metersticks that have inches on one side. At each station, tape two metersticks vertically on a wall for measuring height. Tape two metersticks horizontally for measuring arm span. Make the height of the horizontal metersticks appropriate to the heights of your students' shoulders. One way to tape the metersticks is shown in Figure 1. In this case, students must add the reading on one meterstick to the length (to the nearest inch) on the other meterstick. The reading on one meterstick will be 39 inches, which must be added to the reading on the second meterstick. If yardsticks are used, they may be lined up edge-to-edge. Students must add the reading on the second yardstick to 36 inches. As an alternative to using metersticks or yardsticks, attach a tape measure to the wall. If the tape measure is long enough, students will avoid addition errors when measuring their arm span or height. It is important that the tape measure be attached to the wall to avoid sagging and variability in how students stand.

Figure 1: Setting up measurement station with metersticks

Prepare Data Collection Table. Create a four-column data table on poster-size paper or prepare a display of the Four-Column Data Table in the Teacher Guide. Label the columns with the following headings: Name, Arm Span (S), Height (H), and Ordered Pairs as seen in the Collect section of the Student Guide pages. Post this in a convenient location where students can easily record their data. Number of displays depends on the number of students in your class.

Rulers. Copy and cut out rulers using the Centimeter and Inch Ruler Master if needed for DPP item R.