Display the class number line (0–130) where students can see and reach it with a pointer.

Attach a desk number line (0–100) to each student's desk to use throughout the year.

Display the Math Practices page where all students can see it.

Gather 100-cc graduated cylinders and eyedroppers.

Gather various scales (e.g., rulers, thermometers, balances, barometers). See Lesson 1 Materials Preparation.

Gather paper towels.

Gather water containers. See Lesson 3 Materials Preparation.

Have the following tools readily available for the Daily Practice and Problems items in this unit.

• You and your students will need:

  Triangle Flash Cards: Group C (Teacher Guide)
  Subtraction Facts I Know chart from Unit 9
  200 Chart (Student Activity Book) Reference
  Addition Strategies Menu (Student Activity Book) Reference
  Subtraction Strategies Menu (Student Activity Book) Reference
  base-ten pieces
  individual clocks
  number lines
  coin jars and coins from Unit 1 Lesson 1
  a collection of coins
  

• You will also need:

  demonstration clock
  

LESSON	SESSIONS	DESCRIPTION	SUPPLIES
LESSON 1 Reading Scales	1–2	Students examine and discuss various types of scales. They use skip counting and counting on to interpret scales.	variety of scales (e.g., rulers, thermometers, metersticks) crayons or colored markers chart paper
LESSON 2 Reading Graduated Cylinders	1	Students learn techniques for reading a graduated cylinder properly then read and compare quantities from eight graduated cylinders filled with various amounts of water.	100-cc graduated cylinders eyedroppers masking tape or self-adhesive notes water centimeter rulers centimeter connecting cubes chart paper
LESSON 3 Filling Graduated Cylinders	1	Students work in pairs filling graduated cylinders with specific volumes of water and solve word problems involving volume.	100-cc graduated cylinders containers filled with water eyedroppers paper towels Reading a Graduated Cylinder Tips chart from Lesson 2 small cups
LESSON 4 Measuring Volume	3–4	Students use several small objects to measure volume by displacement. Students use addition and subtraction of two-digit numbers to find and compare the volumes of various objects.	Mr Archimedes' Bath by Pamela Allen Reading a Graduated Cylinder Tips chart from Lesson 2 100-cc graduated cylinders containers filled with water eyedroppers small cups paper towels variety of small objects in a container centimeter connecting cubes
LESSON 5 Problem Solving with Volume	1	Students use their knowledge of finding volume with a graduated cylinder to solve one- and two-step problems.	centimeter connecting cubes 100-cc graduated cylinders small objects container filled with water eyedropper paper towels