This is a document containing 9 QR codes to various websites, games, and activities for the study of the states and changes in matter. This is intended for students in 1st-3rd grades. I have these QR codes posted in the classroom. When students have finished work early, they can transition to these activities. I also have a word document which contains links to several of these games. This word document would be appropriate to use when students are accessing the games from a laptop or desktop computer. If you purchase the QR codes but have difficulties accessing the websites on tablets, please email me at firstname.lastname@example.org. I will send you the word document free of charge. Thank you!