Next, have each student use their blocks to fill the rectangular prism and find the actual number that fills the space. They can share their estimates and explain their reasoning. This gives them the chance to reflect on what a cubic centimeter actually is and how much space it takes up. Each person in the group should estimate how many cubic centimeter blocks it will take to fill each box in the group. Have students share their box with their group. I get all kinds of boxes and usually more than I need for my classes. About a week before I do this activity I will send an email to all faculty asking them to drop some boxes off in my room, if they have them. You do not want to leave a student out of a learning activity because they do not have the materials at home. You should also have some extras on hand for students who do not bring one into class. I usually tell them to bring a box that is smaller than a Rubik’s Cube. They should now take out the rectangular prism they brought from home. This ensures that they all have the opportunity to do the work, but can help each other if needed. Each student should have their own Volume of a Right Rectangular Prism Worksheet. You may also want to set up a station where students can access more cubes on their own. If they need more blocks they should raise their hand and wait quietly for you to call on them. Let them know that the place value blocks in front of them are for their use, and that they may need to share. Have them write their answers in their notebooks. Now hold up a single place value block next to one of the flat squares used above. The Lesson: Volume of a Right Rectangular Prism You would need to break it down into more than one section to get to this rule. Know that irregular shapes will not always follow this rule. If you look at your arrangement,it is repeated addition, in this case. Why did they arrange their squares the way they did? Are there other ways to arrange them? Do they mean the same thing?Īsk the students, What is the formula we use to find the area? Write it on the board. Have them turn to the neighbor and explain their thinking. On the board, you can have precut squares with tape on the back so you can model the arrangement of squares. The students should arrange their squares so that there are three rows of two squares. Ask students how you can figure out how much carpet you need to cover this space and ask them to show you how they can cover the space with their squares. You can also have the squares on their desk when they enter for class to save time. Hand out packs of six small, 2D squares to each set of partners. Walk through what area means the number of squares that cover a given 2D space. Volume of a Right Rectangular Prism Worksheetīefore you begin, review with students how to find the area of a rectangle.One copy of the Volume Worksheet for each studentĬlick the link below to Download the Worksheet:.A small rectangular prism brought in by students – for example, a toothpaste box, raisin box, etc.
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