Cuboid nets

When we laser cut our fruit juice cartons, we had the "holes" left over.

With squared paper stuck in the gap, we used them to look at the surface area of the cuboids.

Find the area

Using Cuisenaire rods, make 5 rectangles, which between them have side lengths 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. What area do they each cover? What total area do they cover?

We used the Cuisenaire environment to record our rectangles.

And then calculated the total area:

We had a range of different totals:

The next question was: What is the biggest possible area? Well done to Samyak who saw straight away how it should be done:

Here's a slideshow of our work:

Hundred Faces and Haiku Poems

Justus started it off. When he'd finished his maths task, in a spare moment, he made a face.

Again, after our work with DST, we had a little spare time: so we made some more. This time Mr Gregg made a rule: each face must cover one hundred squares, must have an area of one hundred.

Today we wrote some haiku poems to go with our faces.