July 22, 2015
|
by Molly Stahl
Lesson Plan:

Measurement Madness

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Students will be able to use forms of non-standard measurement to measure various objects.

(5 minutes)
  • Tell students to close their eyes and imagine that they are going on a trip. The trip they are going on is to an island, so they are going to need a raft to get there. Have students think about what size raft they would need for their trip. Ask them how they would build it?
  • Have students open their eyes.
  • Ask students to share their ideas with their partner or group.
(15 minutes)
  • Tell students that they are going to start their math lesson by listening to a story about two friends who need to build a raft. Ask them to pay close attention to how they plan to build it.
  • Play Muggo's Raft.
  • Ask questions about why Muggo's raft was a different size than the one Chipmunk built.
  • Show students your "raft" made of bulletin board paper.
  • Model measuring the raft with your feet. Have students count along as you take each step.
  • Invite a few volunteers to measure the raft with their feet. Record their measurements on the board.
  • Ask students why all of the measurements are different. Ask students how they can measure so that everyone gets the same answer.
  • Tell students that using the same person's foot would definitely get everyone the same answer. Let students know that using a ruler is another great option, but today the class is going to focus on using non-standard measurement, which means using objects we wouldn't typically use.
(10 minutes)
  • Introduce the unit of non-standard measurement students will be using, these would either be manipulatives or the cutouts from the Measure Me worksheet.
  • Model how to measure an object explicitly showing how to put the measuring tools down then moving one at a time while counting.
  • Pass out the Measure Me recording sheet. Model and instruct students to write or draw the measurement tool at the top of each column.
  • Explain that students will be measuring objects around the room first with one type of measurement tool and then with another.
  • Walk around the room to show students where the Measure Me objects are located.
  • Model using a measurement tool to measure and record answers on the recording sheet.
(25 minutes)
  • Split the class in half, giving one half tool #1 and one half tool #2.
  • Assign a few students to each measurement location and begin.
  • Once your students are finished, have them rotate to the next location. Repeat until they have had the opportunity to measure each object with their first measurement tool.
  • Switch measurement tools and repeat.
  • Enrichment: Have students make predictions before measuring the actual size.
  • Support: Pair struggling students to work with a partner.
(10 minutes)
  • Pass out the How Long? worksheet and read the directions aloud.
  • Distribute paperclips to each student.
  • Collect worksheets as students finish.
(5 minutes)
  • Review Measure Me recording sheet results.
  • Discuss possible reasons students had slightly different answers. Example: not measuring back to back, measuring the wrong side.
  • Ask students why it is important that everyone uses the same form of measurement. Have students turn and talk to a partner.
  • Have students share their responses.

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