I would say that this set is more appropriate for 1st and 2nd grade. Some of my kinders were very engaged with the basic models, but none were able to do the complex builds independently. That being said, it's a very well constructed set and the cards are invaluable as starting points. I'd buy it again, with the understanding that I'd be playing alongside my students.

Pure joy , when kids get to see the movement and things happening because they set it up.

I like this kit, but it only comes with one goal piece. There are 10 different tracks we can make, but they all use a goal at the end. I wish it had come with enough goals to make it truly a class set as it says on the box.

The kids love building with this chain reaction kit.

Good for learning cause and effect. A little frustrating for some of the littles, but helps them work on trial and error and trying again.

I was happy with the quality of the construction of the components and the ease of assembling things. The instructions really emphasize trial and error and I believe that's because some of the tracks that are included have areas that don't align with the laws of physics (e.g., the red ball would be too light to push the next component unless it has more forward momentum from a higher starting place). I basically scrapped the included cards and made my own. I also wish that the components could be purchased separately since 5 pendulums are included, but only 4 hammers. I would also buy additional goal boxes so that more than 1 student or group of students could work on a chain reaction at a time.

Our five year old grandson loves this! He can do several of the cards on his own. Just needs a little help with the harder ones. I love how it makes him think!

We love this item! The kiddo was very interested in the cause-effect of the ball going through the various stages of this toy.

I has been the most played toy since received.

This is a good games for children develop their skill.

I loved the concept for my grandchildren but my 4 year old wanted to just build a tower and fort. Let her and will do chain reactions another day. I had taken only a few pieces out to build the first and second reactions. My 7 year old said it was boring until she got the hang of it.

I am so excited to use this kit in the classroom with our 1st grade students. We do a Balance and Motion unit and needed to insert some more engineering lessons in our plan. My daughter and I tried out this set over the summer and it was a HOOT! The instruction cards are very clear, and yet there is just enough allowance in the pieces to provide a challenge. It doesn't always work (just like real life mechanical things), so there is some trial and error. But then when you get it to work - huge celebration! Just the right amount of challenge.