Before you begin
Choose a grade
Select a grade before opening States of Matter.
Ask your teacher or grown-up if you are not sure.
K-2
Kindergarten, Grade 1, or Grade 2.
3-5
Grade 3, Grade 4, or Grade 5.
6-8
Grade 6, Grade 7, or Grade 8.
9-12
Grade 9, Grade 10, Grade 11, or Grade 12.
College
College or university.