This math journal has both information and worksheets that go with Operations and Algebraic Thinking for the Grade 3 Common Core Math (3.OA.4, 3.OA.5, and 3.OA.8). Such topics include properties of addition & multiplication, number sentences, missing values in number sentences, variables, writing a number sentence with a variable, missing variables, and estimation. This is great for use in whole group math instruction, small group(s), tutoring, or for seconds going to thirds or any kind of math review. There are so many different options.
It also includes a tracking sheet so you can keep track of student grades as you go or how well students do on a topic.
I also have similar products for different Grade 3 topics available in my teacher store. Check them out!