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  # A litre Please
  
  This lesson introduces students to measuring and estimating liquid volume, using liters (l) as the standard unit of measurement.
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  Students will be able to measure and estimate liquid volume, using liters as the standard unit of measurement.
  
  (15 minutes)
  • Tell your students that they will learn about the Litre(l), which is a metric unit of measurement, as opposed to a standard unit of measurement.
  • On the board, write the word LitreWith its abbreviation L.
  • Show the students the container with the Capacity, or the space a solid, liquid, or gas takes up, of a litre.
  • Ask your students where they might see the litre as a unit of measurement. For example, it is found on some grocery products such as canned goods.
  (15 minutes)
  • Demonstrate to your students what they will do in groups later.
  • Collect everything you need for this activity: two medium-sized containers, one 1 litre container, a container of water, a plastic container or sheet to shield objects from water, and the worksheet.
  • Give the containers names on the worksheet so that you can keep track of which container you're using.
  • In front of the class, estimate if the medium-sized container can hold less than one litre, more than litre, or exactly one litre.
  • Pour water into the medium-sized container until it is full.
  • Then, to measure how much water you actually poured in, pour that water from the medium-sized container into the one litre container.
  • Check the estimate and compare it to the actual result.
  (5 minutes)
  • Group the students in three to four groups of three to four students.
  • Give each group two different medium-sized containers, one 1 litre container, a container full of water, and a plastic container or sheet to cover objects. Give each student one worksheet.
  (15 minutes)
  • Instruct your students to complete the activity and the worksheet as you modeled. Make sure they measure both of the medium-sized containers.
  • Have them fill out the bottom of the worksheet.
  • Walk around and observe the students as they work on completing the activity.
  • Monitor the students as they work, making sure the activity is done appropriately.
  • During this time, ask questions to make sure the students understand the concept of liquid measurement.
  • Enrichment:Have more than two medium-sized containers available for your students.
  • Support:Give your students a a smaller container that is less than one litre. Make sure your students understand "less than" before moving on.
  (5 minutes)
  • At the end of the independent working time, ask your students to identify the medium-sized containers as less than, equal to, or more than one litre.
  (5 minutes)
  • Ask for a spokesperson from each group to share the group's findings.
  • After each group has shared the results of their activity, ask the class if there are any questions or comments.
  
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