When introducing cross sections, it may be difficult for students to visualize the polygon that is formed by slicing a solid. Consider this interactive investigation for slicing a cube as a launch for the concept of cross sections from Annenburg Learner.
 |
| Source: Learner.org |
Then allow students to investigate cross sections of multiple solids through a Play-Doh Cross Sections Lab Activity. Materials needed include play-doh, paper plates, dental floss, plastic knife, and ruler. In teams of four, each student constructs two of the solids listed on the record sheet. When the team finishes building models with the specified cross sections, use the All Write RoundRobin structure to share discoveries and complete the record sheet. Follow-up with the to check for understanding.
 |
| 7.G.A.3 Resources |
This activity set highlights Common Core State Standard 7.G.A.3 included in MATH-7.
This looks GREAT Lisa! Thank you! I think my students will really love the Interactive Investigation link that you posted. I know it helped me.
ReplyDeleteYou're welcome! To strengthen your students' visual processing abilities, ask them to predict the shape of the cross section before you slice. You could even ask them to record on an answer board to share in their teams...the Numbered Heads Together structure would work nicely to enhance engagement.
Delete