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.

Making a carton for a litre of fruit juice #2

After exploring cuboids in maths lessons, we used 2D Design to draw our cuboids, ready for laser cutting:

Then we were ready to go to Design and Technology in Secondary and the laser cutter:

Here's a video:

Next: #3 to make the cartons look like fruit juice cartons...

Making a carton for a litre of fruit juice #1

We're making tropical fruit juice this Friday. We also want to try designing and making a carton that could hold a litre of the juice.

Mr King who teaches technology in Secondary is going to help us. He has a laser cutter that will cut our cartons. Here it is, cutting a cube:



So, we did a little work to get us used to cuboids. What lengths would a cuboid of 24 cm³  be?
We came up with a number of answers:

We had a go at creating a net for one of these:

And we created some other nets for cuboids.

Now, it was time to think about our litre of juice. 1 litre is 1000 milliltres. Or you can say 1000 cm³ . We needed to multiply three numbers together to make a bit more than 1000

We used the calculator to try and find three numbers that would do that:

And chose the ones that we wanted for our carton.

To be continued...   #2 laser cutting our cuboiids