Scratch for Arduino (S4A) Project - A Food Detector

Here is a project to design a Food Detector - an interactive game that tries to identify the type of food among a few given food items.  It uses the Arduino's analog inputs to measure the resistance offered by different food items. I designed this lesson for our Grade 5 students, and taught it last week at school. The inspiration for this lesson came from the Pixelate game, that I found on the Arduino site. The class went really well, and the kids had fun playing detective with different fruits & vegetables.

Below is the formal lesson plan:

Aim

Different food items have different resistance/ conductance to electricity. Learn to use the analog sensors in the Arduino to identify different food items, with S4A (Scratch for Arduino) as the software development environment.