While the elementary science titles for K-6 give students an in-depth exposure to scientific topics, 7th and 8th graders need to move up to General Science 3rd Edition and Physical Science 4th Edition since middle school is a transitional time for learning how to take notes, study for tests, and record formal lab results in preparation for high school sciences. 

But this doesn’t mean your kids can’t keep learning together. Experiments are fun at any age, and older students can always help their younger siblings do the activities while explaining some of the concepts.