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# Joy of Problem Solving

## A guided tour through our most beautiful and delightful puzzles.

Problem solving requires creativity, intuition, knowledge, and skill. It also requires practice.

This course dives deep into four mathematical explorations, each of which quickly goes beyond 'rote' learning, challenging you to explore patterns and create proofs. You'll get a mental workout that strengthens your problem solving abilities, especially in logic and algebra.

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1. 1

### Intro to Problem Solving

Apply creativity, lateral thinking, and mathematical skill.

1. #### Logical Reasoning

Warm up with these logic puzzles, ranging from simple to mind-bending!

2. #### Geometric Shortcuts

See how a clever perspective is often the key to geometric problem solving.

3. #### Flipping Pairs

Detangle the possible from the impossible in these interactive puzzles.

2. 2

### Coin Rearrangements

Can you slide, jump, and flip to transform one pattern into another?

1. Included with

#### Coin Warmups

Pause a moment to think carefully and then rearrange these coins from one configuration to another.

2. Included with

#### Sliding Puzzles

The strategies for solving these challenges get a bit more complex.

3. Included with

#### Sliding and Jumping Part 1

In this game, not only can the coins slide, they can jump!

4. Included with

#### Sliding and Jumping Part 2

In this version of the sliding and jumping and game, things get more restricted...

3. 3

### Truth Tellers and Liars

Deduce fact from fiction given assumptions and observations.

1. Included with

#### This Sentence Is True

Reason out when these statements are true and when they're false.

2. Included with

#### If It Starts With If, Then...

Explore the peculiar behavior of "If...then..." statements.

3. Included with

#### Jokers & Other Tricksters

See what happens to logic when a "trickster" can either tell the truth or lie...

4. Included with

#### Humans & Vampires

Wrangle each of the characters in this sequence into one of four crazy categories.

4. 4

### Operator Searches

Solve problems in reverse using the rules of arithmetic!

1. Included with

#### Strategies for + and -

You have only two options for each box: plus or minus.

2. Included with

#### Use Only + and -

What are all of the possible results of these equations using only plus and minus?

3. Included with

#### Concatenation Strategies

Concatenation lets you push two digits together to make a two-digit number.

4. Included with

#### Concatenation, +, and -

Strategically combine addition, subtraction, and concatenation together.

5. 5

### Matchstick Puzzles

These spatial puzzles are math problems in disguise!

1. Included with

#### Lateral Thinking Matchstick Puzzles

Combine all of the strategies you've seen to solve this last set of challenges.

2. Included with

#### Overlapping Figures

Stretch your intuition to new, creative perspectives.

3. Included with