This project includes 2 versions: a CORE version for your mainstream/average ability students, and an EXTENSION version for your high fliers.
Each version contains 3 pages. Students are asked to use coloured paper and card to construct an abstract 3D sculpture and decorate it in 2D coloured paper shapes. Each 2D and 3D component must meet a specified area, perimeter or volume (more simple constraints such as "a volume under 1000 square centimetres" are used for the CORE and more challenging measurements such as "a volume of 125 square centimetres").
Students are asked to record their measurements, and a space is included for a description (students can have fun with this and make up a serious or silly analysis of the meaning of their sculpture), and there is a space to paste on a photo of their sculpture or do an illustration.
My Grade 5 students have LOVED doing this project and it has kept them occupied (mostly independently too!) for many sessions. I have kept this file as a word document so that you can edit the measurements, use of metric system, and/or make it easier or harder to suit your students. The project is also great for practising making/using nets of 3D shapes!