## Math 421K Links

**There are extra websites and examples of the topics we learn in class here; keep checking back because I’ll be adding to this page constantly! Let me know about broken links and I’ll check those out too.**

**Extra Practice: Worksheets for Basic Drills** [most with answers]

- http://www.math-drills.com/
- http://www.math-aids.com/
- http://www.dadsworksheets.com/
- http://www.mathsisfun.com/
- http://www.classbrain.com/artteach/publish/article_51.shtml
- http://www.onlinemathlearning.com/

**Consumerism (Chapter 1)**

- Place Value and Rounding: If you need a little practice, try this puzzle or this football-themed game
- Unit Price: Some more examples and ones you can try here
- Unit Price: Here is a game you can try to see if you understand the concept
- A video about comparing prices (I’ll show this to you in class)
- Other videos with unit price examples: Video #1; Video #2
- An online currency converter
- To convert between Celsius and Fahrenheit, use this online calculator (also some other conversions on here, like for pounds to kg)

**Measuring Length (Chapter 2)
**

- Converting between metric and imperial units (with conversion units), with temperature and lots of other measures: Math is Fun, IXL
- The metric system: explanation and some examples of conversions

**Measuring Area (Chapter 3)
**

- Here’s a good website you can use to practice area (and perimeter) of rectangles; you can do the problems and have your answers checked as you go
- This website has three videos about finding areas of composite shapes
- Surface area of boxes (or rectangular prisms): Video Worksheet (with answers)

**Getting Paid for Your Work (Chapter 4)
**

**All About Angles (Chapter 5)
**

- This website gives examples of angle types: acute, right, obtuse, etc.
- Practice with using a protractor and measuring angles
- Another site to practice with a protractor
- Yet another site to practice measuring angles
- Where are angles used in the real world? Site #1
- A good site that contains information and examples about angles, || lines, and transversals
- Parallel Lines and Transversals: Site #1, Site #2

**Pythagorean Relationship (Chapter 6)
**

- A nice page with an explanation and examples of how the relationship works
- Another good page with a nice explanation and some examples of how the relationship works

**Right Triangle Trigonometry (Chapter 7)
**

- This handout has a simple set of explanations and some problems (with answers) … don’t worry about the last page, but the first four pages are great
- A couple of examples involving finding a missing side of a right triangle
- Examples of finding a missing angle in a right triangle
- Some video examples of finding missing sides and angles in right triangles

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