Science can be quite tasty. A delectable unit from NASA shows learners why it's important to consider food, nutrition, and health in space. Four lessons explore the idea in great depth, including testing cookie recipes. Along the way,...

Teachers can assess students' knowledge of numerical expressions with these printable worksheets. You can even create your own worksheet or flashcards.

Teachers can assess students' knowledge of writing and interpreting numerical expressions with these printable worksheets. You can even create your own worksheet or flashcards.

This activity gives the user randomized questions to answer on arithmetic with whole numbers and integers.

Brush up on your math skills relating to writing numbers in expanded form then try some practice problems to test your understanding.

This resource provides an interactive worksheet with just ten problems as an independent practice or a quick assessment.

Improve your computation skills using this timed interactive worksheet.

Players must choose the mathematical expression with the highest value to win. Tests understanding of basic arithmetic skills involving the addition, subtraction, multiplication, and division of whole numbers.

At this one page site you can work through step by step a sample problem that illustrates the problem solving strategy for "Write a number sentence." The answer is right there to help you check your thinking.