We looked at their topic schedule for the semester and came up with three ideas we wanted to use with the picture books (angles, reasoning, and triangles). Our first lesson was an introduction to angles, and I used Hamster Champs by Stuart J. Murphy.
After the reading, we used a simple Angles Chart from Scholastic and had the students get up out of their seats and use pipe cleaners to find acute, obtuse and right angles within the classroom. It wasn't as easy as you might think...the obtuse angles were the most difficult to find. The entire activity took about 15-20 minutes and the students had a quick intro to the next week's lesson.