Imagine you are an Environmental Scientist who needs to make sure that water is clean and safe to drink. Work in a group to design, build & code your own SODIS time using the Climate Action Kit!

An icon of a person sitting at a table with a book and a laptop. Icons of a magnifying glass, gears, and a question mark surround them
What does an Environmental Scientist do? Check out their Career Profile!

As you go through the steps below, you may wish to use our Design Journal Template to keep track of your work.

Design Journal Template
An icon of a magnifying glass, a paper with notes, and a brain.

Step 1

Do some additional research on SODIS and see if there are other timers out there.

Icons of a light bulb, a thought bubble, and a pencil.

Step 2

Plan what features you want your timer to have and decide what building blocks, sensors, smart components, and craft materials you will need for building.

icons of 3 building blocks (cube, corner connector, and short frame)

Step 3

Build your prototype, then connect it to Microsoft MakeCode to add code.

Icons of code blocks.

Step 4

Test and debug until the device works.

SUCCESS CRITERIA

I can build a SODIS timer with the Climate Action Kit that:

  • keeps track of how long water has been in the sun
  • clearly indicates when the water is safe to drink
  • works well on sunny and cloudy days

and uses at least:

  • one light sensor

Don’t feel limited by this. You can get creative and add more features if you would like!

Let’s Build!