MathIsimple
Unit 7: Lesson 3

Problem-Solving Strategies

Become a problem-solving expert! Learn five powerful strategies: draw a picture, make a list, guess and check, work backwards, and find patterns. Choose the best tool for each problem! ๐Ÿง ๐Ÿ› ๏ธ

30-40 min
Medium
Draw a Picture Strategy
Make a List Strategy
Guess and Check Method
Working Backwards
Finding Patterns

๐ŸŽฏ Master Problem-Solving Strategies!

Learn powerful strategies that work for ANY problem!

Draw a Picture Strategy

Learn when and how to draw pictures to solve problems!

Easy
7 minutes
๐Ÿ’ก

๐ŸŽจ There are 5 children. Each child has 2 hands. How many hands are there in all? Which strategy works BEST?

Click to interact โ†’

Make a List Strategy

Learn when making an organized list helps solve problems!

Easy
7 minutes
๐ŸŽจ

๐Ÿ“ When is 'Making a List' a GOOD strategy? Click on all situations where lists help!

Click all correct options

Selected: 0
Click to interact โ†’

Guess and Check Strategy

Learn how to make smart guesses and check them!

Medium
8 minutes
๐ŸŽฏ

๐ŸŽฏ Two numbers add up to 12. One number is 3 more than the other. What are the two numbers? (Use guess and check! Try different pairs until you find numbers that work.)

Click to interact โ†’

Working Backwards Strategy

Learn to start from the end and work back to the beginning!

Hard
8 minutes
๐Ÿ”—

โช Sarah ends with 10 marbles. Before that, her friend gave her 4 marbles. Before that, she gave 3 marbles to her brother. How many did she START with? Match each step working BACKWARDS!

๐Ÿ–ฑ๏ธ Drag options below to the correct boxes (computer) or click to move (mobile)

๐Ÿ“ Target Zones

๐ŸŽฏEND (What we know)
Waiting...
1๏ธโƒฃStep 1 Backwards
Waiting...
2๏ธโƒฃStep 2 Backwards
Waiting...
๐ŸSTART (What we're finding)
Waiting...

๐ŸŽฏ Draggable Options

๐ŸShe ends with 10
โฎ๏ธUndo 'got 4': 10 - 4 = 6
โฎ๏ธUndo 'gave 3': 6 + 3 = 9
๐Ÿš€She started with 9
Progress:
0 / 4
Click to interact โ†’

Finding Patterns Strategy

Learn to spot patterns that help solve problems!

Medium
7 minutes
๐Ÿ”ข

๐Ÿ” A pattern starts: 2, 4, 6, 8, ... What comes next? Arrange these numbers in order!

Drag to sort or use โ†‘โ†“ buttons to adjust ยท Smallest to Biggest

1
1๏ธโƒฃ6๏ธโƒฃ16
2
1๏ธโƒฃ2๏ธโƒฃ12
3
๐Ÿ”Ÿ10
4
1๏ธโƒฃ4๏ธโƒฃ14
Click to interact โ†’
๐Ÿ“šKnowledge Cards: Strategy Mastery

Master Problem-Solving Strategies

Explore 10 essential knowledge cards about powerful problem-solving strategies!

Draw a Picture Strategy

Drawing a picture is one of the MOST POWERFUL problem-solving strategies! When you read a problem, try to visualize what's happening, then draw it using simple shapes. You don't need to be an artist - circles, squares, and stick figures work great! Drawing is especially helpful for problems involving objects, groups, or arrangements. It makes abstract problems concrete and visual. You can SEE the situation, COUNT things, and understand relationships. Many students who struggle with word problems succeed once they start drawing!

๐ŸŒŸExamples:

Draw simple shapes (circles, squares) to represent objects

Best for: problems with objects, people, or things you can visualize

Example: '5 vases, 3 flowers in each' โ†’ draw 5 vases, 3 flowers per vase

Don't need artistic skill - simple shapes work perfectly!

Pictures turn words into something you can SEE and COUNT

Pro Tip! ๐Ÿ’ก

Draw DURING your first read! As you read, sketch quickly. This helps you understand the problem AND creates a tool for solving it!

Common Mistake Alert! โš ๏ธ

Thinking you need to be a good artist! Simple and quick beats detailed and slow. Circles and stick figures are perfect - they're fast and clear!

Real-World Use ๐ŸŒ

Architects draw floor plans, scientists draw diagrams, engineers draw schematics, designers draw sketches. Drawing to understand is a professional skill!

Practice Idea! ๐ŸŽฏ

Picture practice! Take 5 word problems. For each, draw a picture BEFORE calculating. See how drawing helps you understand and solve correctly!

Make a List Strategy

Making a list is perfect for organizing information or finding all possibilities! Lists help when you need to keep track of multiple pieces of information, find combinations, or systematically explore options. Example: 'How many outfits from 3 shirts and 2 pants?' Make a list: Shirt 1-Pants 1, Shirt 1-Pants 2, Shirt 2-Pants 1, etc. Lists are organized, clear, and ensure you don't miss anything. They turn messy information into neat, usable data. Lists are your friend when problems involve multiple items or options!

๐ŸŒŸExamples:

Write information in an organized way (like columns or rows)

Best for: combinations, possibilities, or organizing data

Example: 'Monday: 3 apples, Tuesday: 5 apples' โ†’ make a day-by-day list

Lists help you see patterns and keep track of information

Systematic listing ensures you don't miss anything!

Pro Tip! ๐Ÿ’ก

Use columns or tables! Organize lists into neat columns with labels. Organization makes lists more useful and easier to read!

Common Mistake Alert! โš ๏ธ

Making unorganized lists that are hard to read! Take time to organize - use columns, numbering, or bullet points. Organized lists are effective lists!

Real-World Use ๐ŸŒ

Shopping lists, to-do lists, guest lists, ingredient lists - lists organize life! Scientists list data, businesses list inventory, everyone uses lists!

Practice Idea! ๐ŸŽฏ

List everything! For one day, make lists for everything you do: morning routine list, snack choices list, TV shows list. Experience how lists organize information!

Guess and Check Strategy

Guess and check means making an educated guess, checking if it's correct, and adjusting based on what you learn! It's not random guessing - you make SMART guesses and use each result to make better guesses. Example: Finding two numbers that multiply to 24. Guess: 3 and 8? 3ร—8=24 โœ“ Perfect! Or if first guess is wrong, say 2 and 10? 2ร—10=20, too small, try bigger numbers! Each guess teaches you something. Guess and check works when direct calculation is difficult but checking an answer is easy!

๐ŸŒŸExamples:

Make a reasonable guess, check if it works, adjust if needed

Best for: problems where it's hard to calculate directly

Example: 'Two numbers add to 15, differ by 3' โ†’ Guess: 8 and 7? Check: sum=15โœ“, difference=1โœ—. Try again!

Keep guessing smartly until you find the answer

Learning from wrong guesses helps you guess better!

Pro Tip! ๐Ÿ’ก

Make your first guess in the middle range! Too high? Guess lower next. Too low? Guess higher next. Use each guess to narrow your search!

Common Mistake Alert! โš ๏ธ

Random guessing without learning from results! Each guess should inform your next guess. If 10 is too big, don't then guess 20 - guess smaller!

Real-World Use ๐ŸŒ

Scientists test hypotheses (guess and check!), cooks adjust recipes (taste and adjust!), athletes try techniques (practice and refine!). Systematic trial is everywhere!

Practice Idea! ๐ŸŽฏ

Guess and check games! Play: 'I'm thinking of a number between 1-100. You guess, I say higher or lower.' Practice strategic guessing!

Work Backwards Strategy

Working backwards means starting from the end result and undoing each step to find the beginning! This strategy is perfect when you know the final result but need to find what you started with. To work backwards, REVERSE each operation: if something was added going forward, subtract going backwards; if something was subtracted going forward, add going backwards. Example: 'John ends with $12. Before, he spent $8. How much did he start with?' Work backwards: 12 + 8 = 20. He started with $20! It's like rewinding time!

๐ŸŒŸExamples:

Start from the END (what you know), work back to START (what you're finding)

Best for: problems that describe a series of changes leading to a final result

Example: 'Ended with 15, gave 5 away earlier' โ†’ Work back: 15 + 5 = 20 (started with)

UNDO each action: addition โ†’ subtract backwards, subtraction โ†’ add backwards

Like rewinding a movie step by step!

Pro Tip! ๐Ÿ’ก

Write 'Work Backwards!' at the top to remind yourself. Then list steps in reverse order: 'End: 12' โ†’ 'Undo step 2' โ†’ 'Undo step 1' โ†’ 'Start: ?'

Common Mistake Alert! โš ๏ธ

Not reversing the operations! If the problem says 'added 5', you must SUBTRACT 5 going backwards. Undo means do the opposite operation!

Real-World Use ๐ŸŒ

Detectives work backwards from clues to solve crimes. Engineers work backwards from goals to plan steps. Working backwards from goals helps planning!

Practice Idea! ๐ŸŽฏ

Backwards story! Write a simple story forward: 'Had $20, bought $5 candy, earned $10 mowing.' Now work backwards to verify the start!

Find a Pattern Strategy

Finding patterns means discovering the RULE that describes how things repeat or change! Look at a sequence of numbers, shapes, or events. Ask: What's changing? How is it changing? By how much? Once you find the pattern rule, you can predict what comes next! Patterns can be REPEATING (A-B-A-B-A-B) or GROWING (2, 4, 6, 8 - growing by 2 each time). Pattern recognition is a powerful mathematical thinking skill used in many areas!

๐ŸŒŸExamples:

Look for what repeats or what changes in a predictable way

Best for: sequences, growing patterns, or repeating patterns

Example: 3, 6, 9, 12... โ†’ Pattern: add 3 each time

Example: red, blue, red, blue... โ†’ Pattern: alternates

Once you find the rule, you can continue the pattern!

Pro Tip! ๐Ÿ’ก

Look between elements! Don't just look at the numbers themselves - look at what changes FROM ONE TO THE NEXT. The change pattern is often the key!

Common Mistake Alert! โš ๏ธ

Assuming the first rule you see is correct! Always check at least 3 elements to confirm your pattern. One or two might be coincidence!

Real-World Use ๐ŸŒ

Music has patterns (rhythm, melody). Nature has patterns (seasons, day/night). Patterns help us predict and understand our world!

Practice Idea! ๐ŸŽฏ

Pattern hunt! Find 5 patterns in real life: tile patterns on floors, patterns in songs, daily routine patterns, calendar patterns, nature patterns!

Choosing the Right Strategy

Choosing the right strategy is itself a skill! Read the problem carefully and think: What type of problem is this? Would drawing help me visualize? Is there information to organize into a list? Can I guess and check? Should I work backwards? Is there a pattern? Different problems suit different strategies. Sometimes multiple strategies work! The key is having a TOOLBOX of strategies and knowing when to use each tool. Like a carpenter chooses tools - you choose strategies!

๐ŸŒŸExamples:

No single strategy works for every problem

Read the problem carefully - which strategy fits?

Can you visualize it? โ†’ Draw a picture

Multiple items to track? โ†’ Make a list

If one strategy doesn't work, try another!

Pro Tip! ๐Ÿ’ก

Ask yourself: 'What would help me understand this problem better?' Your answer often points to the right strategy!

Common Mistake Alert! โš ๏ธ

Always using the same strategy for every problem! Different problems need different tools. Build flexibility - try different strategies!

Real-World Use ๐ŸŒ

In life, different situations need different approaches. Flexibility and choosing the right approach for each situation is crucial for success!

Practice Idea! ๐ŸŽฏ

Strategy matching! Get 10 problems. Don't solve them - just decide which strategy fits each best. Practice matching problems to strategies!

Combining Multiple Strategies

For complex problems, you might need to combine strategies! Start with one strategy, and if you need more help, add another. Example: 'Find all ways to make 20ยข with nickels and dimes.' Draw a picture to understand (visualize coins), then make a list of combinations (organized tracking). Strategies aren't exclusive - they work together! Using multiple strategies shows advanced thinking. Like using multiple tools to build something complex!

๐ŸŒŸExamples:

Sometimes one strategy isn't enough - use multiple!

Example: Draw a picture AND make a list

Example: Find a pattern, THEN use it to work backwards

Strategies work together like teammates

Flexibility and creativity help solve complex problems!

Pro Tip! ๐Ÿ’ก

Start with the strategy that helps you UNDERSTAND the problem, then add strategies that help you SOLVE it!

Common Mistake Alert! โš ๏ธ

Thinking you must use only one strategy! Real mathematicians use multiple strategies. Combining approaches is smart, not cheating!

Real-World Use ๐ŸŒ

Complex projects use multiple approaches: architects draw AND make lists AND work backwards from goals. Combining methods solves hard problems!

Practice Idea! ๐ŸŽฏ

Strategy combo challenge! Take a complex problem. Use TWO strategies together: draw AND list, or pattern AND work backwards. See how they help each other!

When a Strategy Doesn't Work

Sometimes you choose a strategy that doesn't help with that particular problem - and that's OKAY! The key is recognizing when a strategy isn't working and being willing to try a different approach. If drawing isn't helping you understand, try making a list. If guess and check is taking too long, try finding a pattern. Flexibility is a key problem-solving skill! Every strategy you try teaches you something, even if it doesn't solve that problem. Switching strategies isn't failure - it's smart problem-solving!

๐ŸŒŸExamples:

If a strategy isn't helping, switch to a different one!

Stuck on drawing? Try making a list instead!

Getting confused? Try a simpler strategy

Changing strategies isn't giving up - it's being flexible

Sometimes trying what DOESN'T work teaches you what DOES work!

Pro Tip! ๐Ÿ’ก

Give a strategy a fair try (a few minutes), but if you're stuck, don't hesitate to switch! Spending 10 minutes on a wrong strategy wastes time - switching early saves time!

Common Mistake Alert! โš ๏ธ

Stubbornly sticking with a strategy that isn't working! 'This isn't helping - let me try something else' is SMART thinking!

Real-World Use ๐ŸŒ

In life, when one approach isn't working, we try another! Flexible thinking helps in all situations - work, relationships, learning, everything!

Practice Idea! ๐ŸŽฏ

Strategy switching practice! Take a problem. Start with one strategy. After 2 minutes, switch to a DIFFERENT strategy even if the first seems okay. Practice flexibility!

Strategies for Life

The problem-solving strategies you're learning in math class work for ALL problems in life! Need to figure out how to organize your room? Draw a picture (visualize the arrangement). Plan a birthday party? Make a list (organize tasks). Having friend troubles? Look for patterns (what's happening repeatedly?). These strategies are THINKING TOOLS that help you tackle any challenge. By practicing them in math, you're building thinking skills that will help you forever. You're not just learning math - you're learning how to THINK!

๐ŸŒŸExamples:

Problem-solving strategies work beyond math!

Life problems: try drawing (plan it out), lists (organize steps), patterns (what usually works?)

Strategic thinking helps with school, friends, activities, everything!

The more you practice strategies, the better you get at all problem-solving

You're building thinking skills for life!

Pro Tip! ๐Ÿ’ก

When facing ANY problem (not just math), ask: 'Which strategy could help here?' Transfer your math strategies to real life!

Common Mistake Alert! โš ๏ธ

Thinking strategies are 'just for math class'! These are LIFE strategies disguised as math strategies. Use them everywhere!

Real-World Use ๐ŸŒ

EVERYTHING! Planning trips (list strategy), fixing problems (guess and check), organizing spaces (draw it), learning from past (patterns), planning backwards from goals (work backwards)!

Practice Idea! ๐ŸŽฏ

Non-math strategy practice! Use a strategy to solve a real-life problem: organize your toy collection (list?), plan your ideal day (draw?), figure out why your plant isn't growing (patterns? guess and check?)!

Building Strategy Confidence

As you practice these strategies, you're building a powerful problem-solving toolbox! At first, choosing and using strategies feels effortful and slow. That's normal! With practice, it becomes faster and more automatic. You'll start recognizing problem types and instantly knowing which strategy to try. Making mistakes teaches you - trying a strategy that doesn't work teaches you which strategies DO work for that problem type. With enough practice, you develop confidence: 'I can solve this! I have strategies!' Believe in yourself - you're developing thinking skills that will serve you for life!

๐ŸŒŸExamples:

Every strategy you learn adds to your problem-solving toolbox

With practice, choosing strategies becomes automatic

Making mistakes with strategies teaches you which ones work when

You can solve ANY problem with enough strategy tries!

Believe in yourself - you're a problem-solver!

Pro Tip! ๐Ÿ’ก

Keep a strategy journal! After solving problems, write: 'Problem type: ___. Strategy used: ___. Did it work?' Building pattern recognition!

Common Mistake Alert! โš ๏ธ

Expecting to be an instant strategy expert! Strategy use is a skill that develops with practice. Be patient with yourself - you're learning!

Real-World Use ๐ŸŒ

Confident problem-solvers succeed in ALL areas: school (solving academic problems), work (solving job challenges), life (solving personal challenges)!

Practice Idea! ๐ŸŽฏ

Weekly strategy reflection! Each week, think back: Which strategies did I use? Which worked best? What did I learn? Reflection builds awareness and confidence!