## Operations & Algebraic Thinking

Addition with Missing Numbers(Match the missing number to its correct value) |
Algebra @ Harcourt(Activities for Patterns, Input/Output Tables, Rules, Order of Operations, Properties, Equations, Expressions & Exponents) |
Algebra @ StudyJams(Lessons, tutorials, videos, karaoke, practices & more) |
Algebra Help @ FreeMathHelp(More than 40 free, text-based algebra lessons) |

Algebra ManipulativesPreK-2 @ NLVM(Included are Algebra Tiles, Color Patterns, Fifteen Puzzle, Pattern Blocks, Pentominoes, Polyominoes, Triominoes & Turtle Rectangles) |
Algebra Manipulatives Grades 3-5 @ NLVM(Included are Algebra Tiles, Base Blocks, Grapher, Space Blocks, etc.) |
Algebraic Reasoning(Find the value of a given object based on information provided by two scales) |
Alien Pairs to 10(Find all the pairs to 10 as quickly as possible) |

Bracket Basics(Practice doing the operations in the brackets first) |
Concrete & Pictorial Patterns(Explore simple pictorial, rhythmic & symbolic linear patterns at the Penguin Parade) |
Connect Sums(Click on a series of values that add up to the target sum) |
Equations & Inequalities(Play a pan balance game to explore equations & inequalities) |

Factor Bingo(Create your own factor bingo card then play) |
Factor Tree @ NLVM(Type in a factor & press Enter. Repeat until all factors are found) |
Factorize(Visually explore the concept of factors by creating rectangular arrays. The length & width of the array are factors of your number) |
Fruit Splat Compare Equations(Compare the equations by picking <, >, or =) |

Greatest Common Factor@ StudyJams (Watch the step-by-step tutorial then test yourself) |
Greatest Common Factors@ e-Learning (Tutorial, practice & review) |
Least Common Multiples@ e-Learning (Tutorial, practice & review) |
Least Common Multiple@ StudyJams (Watch the step-by-step tutorial then test yourself) |

Line Plots @ StudyJams(Watch the step-by-step tutorial then test yourself) |
Make 24(Arrange the cards & the arithmetic signs into a formula that yields 24) |
Make X(Arrange the cards & arithmetic signs into a formula that yields x, which is the number to make) |
Multiples @ StudyJams(Watch the step-by-step tutorial then test yourself) |

Multiples, Factors, Primes & Composites(Watch the video & click Play when appropriate) |
Number Bonds Make 10(Combine balls whose numbers add up to ten) |
Number Patterns(Crack the code to open the safe by working out the number sequences) |
Patterns, Relationships & Functions(Play the In/Out Machine game & explore patterns, relationships & functions) |

Pictorial Symbols & Patterns(Complete the patterns & learn about pictorial symbols & patterns) |
Prime Factoring(Help Professor Super save the planet by cooking the "Giant Frozen Rubber Turkeys of Destruction") |
Prime Factorization @ StudyJams(Watch the step-by-step tutorial then test yourself) |
Problem Solving @ StudyJams(Lessons, tutorials, videos, karaoke & practices & more) |

Page updated February 12, 2017