Presents strategies for teaching elementary students about ratio and measurement. Primary students read and discuss a story that involves measurement, then write letters of advice to one of the characters. Intermediate students read the story, write and share letters of advice, discuss the benefits of standard measures, and measure themselves. (SM)

Teachers can take advantage of students' interest in hair by using activities that focus on human hair in science or biology classes. Facts about the growth, purpose, and nutritional requirements for healthy hair are noted. Suggestions for measuring hair strength, and for making a hygrometer to measure general changes in humidity are included. (PP)