MathIsimple
Unit 7: Lesson 2

Problem-Solving Strategies

Expand your math toolkit! Discover powerful strategies like drawing pictures, making tables, finding patterns, and working backwards. Become a problem-solving expert! 🧰🎯

40-45 min
Medium
Visual Strategies
Logical Reasoning
Pattern Recognition
Strategy Selection

🎯 Strategy Practice Adventures

Try different problem-solving strategies and discover which works best for each situation!

Match Strategy to Problem

Choose the best strategy for each problem type!

Easy
6 minutes
🧰

🧩 Match each problem to the best strategy!

🖱️ Drag options below to the correct boxes (computer) or click to move (mobile)

📍 Target Zones

🔍Find a Pattern
Waiting...
📝Make a List
Waiting...
🎯Guess and Check
Waiting...
📊Make a Table
Waiting...

🎯 Draggable Options

🔢Find the 10th number in a sequence: 2, 4, 6, 8...
📚How many ways can you arrange 3 books?
🐔A farmer has chickens and cows (30 animals, 76 legs total). How many of each?
📱Compare costs of different phone plans over 6 months
Progress:
0 / 4
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Draw a Diagram

Solve a problem using visual representation!

Medium
7 minutes
🖼️

🎨 A rectangular garden is 12m long and 8m wide. A path 2m wide surrounds it. What's the TOTAL area including the path?

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Find the Pattern

Extend a number pattern using strategy!

Medium
8 minutes
📈

🔢 Pattern: 3, 7, 11, 15, 19, ___. What comes next?

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Strategy Selection

Identify when a strategy works best!

Hard
9 minutes
↩️

🧠 When is 'Working Backwards' the BEST strategy? Click all that apply!

Click all correct options

Selected: 0
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📚 Build Your Strategy Toolbox

Master multiple problem-solving approaches and know when to use each one

Draw a Picture or Diagram

Drawing transforms words into visuals. When you can see the problem, the solution becomes clearer!

🌟Examples:

🎨

When to Use

Great for geometry, distance, arrangement, or comparison problems. Visual models clarify relationships!

📐

Types of Diagrams

Bar models, tape diagrams, number lines, area models, tree diagrams—choose what fits!

🔵

Example Problem

Tom has 3 times as many marbles as Sue. Together they have 24. How many does each have? Draw bars!

Benefits

Makes abstract concrete, reveals hidden information, helps organize thinking visually!

Pro Tip! 💡

Don't worry about artistic skill. Simple rectangles, lines, and circles work perfectly!

Common Mistake Alert! ⚠️

Skipping diagrams because 'I can see it in my head.' Drawing catches errors mental images miss!

Real-World Use 🌍

Architects, engineers, designers—all use diagrams to solve complex problems!

Practice Idea! 🎯

Solve 5 word problems twice: once with calculations only, once with diagrams. Compare ease!

Make a Table or Chart

Tables organize messy information into neat rows and columns. They're perfect when comparing multiple options!

🌟Examples:

📊

When to Use

Perfect for organizing data, comparing options, tracking patterns, or testing multiple cases!

🗂️

Table Structure

Columns for categories, rows for different cases. Label clearly! Add totals if needed!

🎫

Example Problem

Tickets cost $8 for adults, $5 for kids. How much for different group combinations? Make a table!

🔍

Spotting Patterns

Tables reveal patterns you might miss. Look down columns and across rows!

Pro Tip! 💡

Add a 'notes' column for observations. Writing thoughts helps you notice patterns!

Common Mistake Alert! ⚠️

Making tables too complicated. Keep it simple with clear labels and clean organization!

Real-World Use 🌍

Business decisions, budget comparisons, scientific experiments—tables organize complex choices!

Practice Idea! 🎯

Create tables for family decisions: 'Which streaming service is cheapest for our usage?'

Find a Pattern

Patterns let you predict without calculating every case. Finding the rule unlocks efficiency!

🌟Examples:

🔢

When to Use

Excellent for sequences, repeating situations, predictions, or when things seem to follow a rule!

📈

Types of Patterns

Arithmetic (+same amount), geometric (×same amount), visual (shapes), functional (formulas)!

🚧

Example Problem

Fence posts are 2m apart. How many posts for 20m? Pattern: posts = (distance ÷ spacing) + 1 = 11!

Testing Patterns

Always test your pattern on a few cases before using it. Does it work consistently?

Pro Tip! 💡

Write out at least 3-4 terms before deciding on the pattern. One or two can be misleading!

Common Mistake Alert! ⚠️

Assuming a pattern continues without testing. Always verify with multiple examples!

Real-World Use 🌍

Stock market analysis, weather prediction, growth projections—patterns everywhere!

Practice Idea! 🎯

Find patterns in nature (flower petals), architecture (tile designs), music (rhythms)!

Guess and Check (Trial and Error)

Guess and check isn't random—it's strategic trial and error. Each guess teaches you something!

🌟Examples:

🎯

When to Use

Great when you have constraints, limited options, or need to find unknowns that fit conditions!

🧠

Smart Guessing

Start with reasonable guesses. Use results to adjust: too high? Guess lower! Too low? Guess higher!

✔️

Example Problem

Two numbers multiply to 48 and add to 14. What are they? Try: 6×8=48, 6+8=14. Success!

📝

Keeping Track

Record guesses in a table. Track what works, what doesn't, and why. Learn from each attempt!

Pro Tip! 💡

Make educated guesses based on the numbers in the problem. Narrow the range quickly!

Common Mistake Alert! ⚠️

Giving up after one wrong guess. It's called guess and CHECK—keep refining!

Real-World Use 🌍

Password cracking (ethically!), optimization problems, finding best fits in engineering!

Practice Idea! 🎯

Play guess-my-number games with constraints: 'It's between 1-100, divisible by 3, and odd.'

Work Backwards

Working backwards is like rewinding a movie to find where it started. Reverse the steps!

🌟Examples:

↩️

When to Use

Perfect when you know the end result and need to find the beginning or intermediate steps!

🔄

Reverse Operations

Undo each step: if problem added, you subtract; if multiplied, you divide. Go backwards!

🔢

Example Problem

Think of a number. Triple it. Add 12. You get 39. Original? Work back: 39-12=27, 27÷3=9!

Verification

After working backwards, go forwards to check. Does it lead to the given result?

Pro Tip! 💡

Draw arrows showing each step and its inverse. Visual flowcharts make backwards work clear!

Common Mistake Alert! ⚠️

Forgetting to reverse the operation correctly. Addition ↔ subtraction, × ↔ ÷!

Real-World Use 🌍

Debugging code, retracing mistakes, finding origins in historical research!

Practice Idea! 🎯

Create 'mystery number' challenges for classmates using working backwards strategy!

Choosing the Right Strategy

Expert problem solvers have a toolbox of strategies and know which tool fits each job!

🌟Examples:

Ask Questions

What type of problem? What information do I have? What's being asked? Questions guide strategy choice!

🧩

Try Multiple Strategies

Sometimes combining strategies works best: draw a picture AND make a table!

🔀

Flexibility

If one strategy isn't working after a few minutes, try another. Be willing to switch!

📚

Build Experience

The more problems you solve, the faster you'll recognize which strategy fits. Practice builds intuition!

Pro Tip! 💡

Keep a strategy log. Note which strategy you used for each problem type. Patterns will emerge!

Common Mistake Alert! ⚠️

Always using your favorite strategy even when it doesn't fit. Match the tool to the task!

Real-World Use 🌍

Life requires strategic thinking: choose job-search methods, parenting approaches, health strategies!

Practice Idea! 🎯

Solve one problem using three different strategies. Compare which was fastest and clearest!