RekenWeb

Task cards developed from RekenWeb resources from the Netherlands.

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**Teaching Notes for Building Views** Resources required are: 2 cm wooden cubes & 2 cm multi-link cubes. Isometric dot paper is optional. 20 tasks cards are available for download from [].

Each problem may have more than one right answer.

Challenge students to take away or add cubes, while still maintaining the top, front and right views.

Invite students to find solutions using: • the minimum number of cubes, • the maximum number of cubes, and • to record the number of variations in between.

Students can use the isometric dot paper included to draw their solution using the minimum number of cubes. **HINT**: Use the paper in **landscape mode** to make it easier to create isometric drawings.

Students can successfully create isometric drawings if they start with one top face. Looking at a top face on their model from an angle makes is appear like a rhombus (students will often say ‘diamond’).

The next key step is to draw the vertical lines, making sure that the length on the drawing matches what can be observed on the model made from cubes.

Getting to just this stage boosts the confidence of students, and they feel they are ‘in the game’ to be able to complete their isometric drawings.

Students can also use the interactive applet available from the Freudenthal Institute’s repository of Maths resources available at: [|http://www.fi.uu.nl/rekenweb/en.] The applet called **Building Houses with Side Views** mirrors the task cards.