# Sports Bag

##### This Sports Bag assessment also includes:

Why not give surface area of cylinders a sporting chance in your classroom? A strategic problem-solving task requires pupils to consider the net of a cylinder. Individuals must determine the sizes of the pieces needed to make a sports bag, including the amount needed for the seams. They then figure out the least amount of material needed in order to cut out the pieces.

CCSS: Designed

##### Instructional Ideas

• Build the bag from the sizes given in the answer so the class can see that it actually does work
• Have a discussion on why the rectangular piece should not be 64 cm by 95 cm, using 29 cm as the diameter of the round end
##### Classroom Considerations

• Surface area of cylinders is not directly contained in the CCSS, but pupils should be able to determine that the rectangular piece must go around the circumference of the circle
##### Pros

• The resource provides analyzed work that may be similar to work you see from your class
• The rubric provides suggestions on how to split the points for each portion of the answer
##### Cons

• The key shows how to lay out the pieces on a one-meter piece of cloth, though the answer for the question is that it would fit on 83 cm of cloth