NASA
Food For Thought
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,...
PHET
Expression Exchange
Bank on your ability to write equivalent expressions. Scholars use an interactive to create expressions using coins. They then convert these to algebraic expressions and figure out how to evaluate them. A game with various difficulty...
Houghton Mifflin Harcourt
Challenge: Parentheses, Please!
Given a string of numbers and math symbols, learners take the challenge to insert parenthesis in the proper places to reach certain solutions. This is a challenge, indeed, an engaging enrichment for those who need a little more math!
Common Core Sheets
Common Core Sheets: Operations and Algebraic Thinking 5.oa.2 Worksheets
Teachers can assess students' knowledge of numerical expressions with these printable worksheets. You can even create your own worksheet or flashcards.
Common Core Sheets
Common Core Sheets: Operations and Algebraic Thinking 5.oa.1 Worksheets
Teachers can assess students' knowledge of writing and interpreting numerical expressions with these printable worksheets. You can even create your own worksheet or flashcards.
Shodor Education Foundation
Shodor Interactivate: Order of Operations Four
Students play a generalized version of connect four, gaining the chance to place a piece on the board by answering order of operations questions (addition/subtraction, multiplication/division, exponents, and parentheses).
Quia
Ixl Learning: Writing Numbers in Expanded Form
Brush up on your math skills relating to writing numbers in expanded form then try some practice problems to test your understanding.
Other
Dans Math: Lessons: Order of Operations
This is a brief explanation of the order of operations that includes some simple examples. It also has directions for dealing with parentheses and exponents.
NumberNut
Number Nut: Ordering Operations With Parentheses
A thorough lesson on order of operations that includes detailed examples and related vocabulary.
Other
Mathpower: Elementary Algebra Assignments
Test your algebra aptitude at this colorful website filled with algebra assignments for upper elementary and middle school students. Assignments explore algebra concepts using addition, subtraction, multiplication, fractions, division,...
Other
Math Stories: Write a Number Sentence
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.