# Lesson Plan

Measurement: The Size Is Right

Subject: |
Math |

Grade span: |
K to 8 |

Duration: |
10 to 20 minutes |

*Math Games*

**Description:**

*Price is Right*game scenario, students see, touch, or hear objects, and are then asked to use estimation to predict the object's size.

**Learning Goals:**

**For PreK-2**

- Sort and classify objects
- Recognize and describe a rule for the classification of objects
- Understand length, volume, weight, area, and time
- Compare and order objects according to these attributes
- Understand how to measure using nonstandard and standard units
- Select an appropriate unit and tool to measure

**For grades 3-5**

- Understand such attributes as length, area, weight, volume, and size of angle, and select the appropriate type of unit for measuring each attribute
- Understand the need for measuring with standard units and become familiar with standard units in the customary and metric systems
- Carry out simple unit conversions, such as from centimeters to meters, within a system of measurement
- Understand that measurements are approximations and how differences in units affect precision

**For grades 6-8**

- Understand both metric and customary systems of measurement
- Understand the relationships among units and convert from one unit to another within the same system
- Understand, select, and use units of appropriate size and type to measure angles, perimeter, area, surface area, and volume

**Materials:**

- Items to estimate length, volume, weight, area, time, and other age-appropriate attributes
- Stop watch
- Tape measure, scales and other tools to measure items

**Preparation:**

- Gather a variety of items to measure, and tools to conduct the measurement.
- Develop age-appropriate questions regarding the materials.
- Determine the order in which students will participate (for example, by picking names from a hat, etc.).
- Set group norms for play.
- Develop limitations for guessing amounts (within what amount is a correct answer?).

**What to Do:**

- Select a student or two to be contestants and to "come on down" to play the game.
- Explain to the students that they will be presented with an object and asked to answer a given question about the object (relating to its size).
- Present the players with the item, then ask your pre-selected question (see sample questions in the Teaching Tips). Choose items and corresponding sizes appropriate for the age of the player.
- After contestants make a higher/lower decision, have them check if they are correct by selecting a tool and completing the measurement to determine the actual size of the item.
- Encourage the audience to coach the player as they try to come up with the correct answer.

**Teaching Tips:**

- How long is this pencil? Is the actual length longer or shorter than 15 cm?
- How long (in seconds) does it take ... (me) to .... (count to 20) at a normal rate? Is the time it will take me to count to 20 higher or lower than 30 seconds?
- How far (in inches) can I jump? Is the length that I can jump more or less than 18 inches?
- How many of these cups does it take to fill this jar? Is the number of cups that it will take to fill this jar larger or smaller than 4?
- How many fluid ounces are in this container? Is the number of fluid ounces in this container higher or lower than 8?
- How large is this angle? Is the measurement of this angle greater or lesser than 30 degrees?
- How heavy is this rock? Is the weight of this rock more or less than 10 grams?

**Evaluate (Outcomes to look for):**

- Student engagement and participation
- Estimates that become increasingly accurate, illustrating that students are becoming more familiar with customary systems of measurement and better estimators of size
- Students can measure using standard and nonstandard units of measure
- Students select appropriate tools for measuring attributes
- Students share as well as listen to, apply, and learn from problem-solving strategies of peers

**Standards:**

Click this link to see additional learning goals, grade-level benchmarks, and standards covered in this lesson.