This one about space is a level three, it has amazing pictures with great details and includes little facts highlighted throughout the book. It's not to easy but it's not overwhelming. I found it to be a really good fit for my struggling 5th and 6th graders.
Level 2 is a little easier as you can see and the other details such as fun facts are left out so the students are distracted by them. My students are also enjoying these because look at those cool photographs, he looks like he's coming off the page at you!!
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