Grade 5 · Math
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  3. Algebra
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  5. Financial

Unit 3 of 5 · Grade 5 Math

Algebra

What's the rule behind the pattern?

Patterns that grow, rules you can find, and letters that stand for numbers.

3 topics · 67 concepts · 11 to play

Topics

In order. Each topic shows its concepts first, then the lesson, a test and its games. Your place is saved if you leave.

  1. Patterns & RulesCatch the rule behind a pattern and make it work for youNext for you

    Concepts · 21 idea cards

    1. Repeat, grow or shrink
    2. Patterns around you
    3. One staircase, three patterns
    4. Find the missing term
    5. Which shape is 20th?
    6. Patterns with decimals
    7. Patterns that times by 10
    8. Number strings for 7
    9. Say the rule
    10. From tiles to a table
    11. Growing by adding a core
    12. Extend it backwards
    13. Input, rule, output
    14. Week 0 comes first
    15. The rule as 5x + 15
    16. Jump ahead with the rule
    17. Which figure has 41 tiles?
    18. Make a pattern, then prove it
    19. Graph the savings
    20. Between and beyond the dots
    21. Spending down, four ways
    Start the lesson Test yourselfAbout this topicPlayRule DetectivePlayPattern Forge
  2. Variables & EquationsCrack the = sign's secret and free the mystery number

    Concepts · 23 idea cards

    1. A letter holds a number
    2. A variable can change
    3. 3n means 3 times n
    4. Words into an expression
    5. A picture into an expression
    6. Same value, different look
    7. Put a number in for the letter
    8. Multiply first, then add
    9. An expression in a story
    10. Expression or equation?
    11. Equals means the same value
    12. Do the same to both sides
    13. Guess, check and revise
    14. Work backwards to the unknown
    15. Solve it on the balance
    16. Put it back to check
    17. The unknown can be on either side
    18. Undo a take-away
    19. An equation from a story
    20. An inequality has many solutions
    21. Less than or equal to
    22. Graph the solutions
    23. An inequality in a story
    Start the lesson Test yourselfAbout this topicPlayBalance Repair
  3. Rule MachinesWrite a rule that asks a question — then watch it decide

    Concepts · 23 idea cards

    1. Code is exact steps in order
    2. Swap two lines, change the output
    3. A variable holds one number
    4. Same code, new input
    5. A loop repeats the lines inside it
    6. Counting with a loop
    7. A loop can make a pattern
    8. Trace code in a table
    9. A condition is yes or no
    10. IF … THEN runs only on a yes
    11. IF … ELSE picks one of two paths
    12. Greater than, less than, equal to
    13. Sort numbers with an IF
    14. A question inside a question
    15. A loop with an IF inside
    16. Predict before you run
    17. Change one number, see what changes
    18. Find the bug, fix the line
    19. Test the number on the edge
    20. It runs, but is the math right?
    21. Reuse code for a new job
    22. Write code for a savings plan
    23. Write an IF for a rule
    Start the lesson Test yourselfAbout this topicPlayRule Machine

More to play

Games, playgrounds and stories for the whole unit. Nothing here is recorded.

Reopen a tool from a lesson
  • Pattern MachineReopen the machine and feed it any rule you can invent
  • Balance ScaleLoad both pans and try to knock the scale off balance
  • Code BuilderReopen the code blocks and rebuild the program your way