Turtles? Tortoises? What's the difference? Actually, there are many differences that are interesting, informative and illustrative of the workings of evolution. This passage was written for 4th grade, but is suitable for a 5th or 6th grade science lesson on reptiles. As with everything I have posted on TPT, it is "kid-tested" and sure to provide an engaging lesson. Professionally written questions and a writing prompt are included for assessment.