This is the second year for the stem. Everything has changed even the article and also what we are learning. Last year we learned about Earth science but this year We were learning about Physical Science. We use CK12 to learn and also practice our learning. Before we go to Physical Science we have a little bit of review and it was fun. All of our week we learning about Atom and inside of an atom. So we did a lot of activity to learn. And a lot of experiment too. We also have a quiz at the end of the week and it does not very difficult. and all of the students did very well.