How I Use It
I used this eBook on an "explore" day to get students thinking about light, color and vision. They got to explore the activities, read the articles and discuss what they thought. I ended up including a section on optical illusions in our unit based on student interest generated from our explore day.
The eBook is well done, but I don't know that I would necessarily use it for direct instruction with my students. It's great for exploration, extra time, enrichment, etc.