Michelle Chomiak▸ U4: Math Connections


I initially had a great idea about investigating fractals as patterns, using recursion, on PencilCode, to create Aboriginal inspired dot painting, with ties to Art and Indigenous culture. However this turned out to be more tricky than anticipated because it required functions and parameters and was something that is probably more suited to high school level. See https://mrschom.pencilcode.net/edit/FractalDotPainting

So my next, and much simpler, idea was spawned from seeing a worksheet on arrays, and their link to multiplication. Arrays are also a useful data structure in programming, for storing a group of variables during execution, but I digress. This lesson requires the students to create a program in Scratch that asks for two numbers as input, which it then draws as an array of boxes. This can be preceeded by a lesson on how to draw a box, and a maths lesson on arrays. My solution (see https://scratch.mit.edu/projects/138313112/) is not foolproof and a lot of errors are not handled, but it's a start.

I'm wondering if this is still a bit too tricky for Year 4s? Perhaps build it up over a number of lessons? I'm a new teacher so feedback is very welcome.

Lesson Plan – https://drive.google.com/file/d/0Bxkh6aKYy-qHRGYzQmt5Z2hOTnM/view?usp=sharing
Arrays Lesson Plan.docx – Google Drive

G+ Comments

3 plus ones, 3 comments

  • Michelle Chomiak: This was the dot painting one…
  • Steven Payne: I think the arrays is a really good idea – I like the program! I don’t think it’s too tricky if you’ve done some Scratch before. To start with you could roll dice to get the two numbers and then work out what you need to change in Scratch to draw the array. This simplifies it and then you could lead onto the inputs. (typo: your program asks for a seond number)
  • Steven Payne: Also Scratch does not currently run on an iPad.

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