I have not used the entire kit yet. However, my son did start on activity one and the microscopes are garbage. As you look through the eye piece you can see a bunch of scratches and you cannot focus on the slides they sent. Luckily we have a decent microscope. I will update this review after we have done all the activities if I change my mind.

I purchased this for my then-first grader who was enamored of cells. She loved it then, and She is now in 4th grade and still loves to revisit it, create the cells from the molds, look at the slides, play with the mitosis wheel, etc. And I have recently used it to tutor a 9th grade student who was struggling with the concepts of organelles and mitosis. The hands-on experiences really helped! I will be purchasing more of these tub sets-they live up to their promise!