**Welcome!**

This is an online webpage designed to go along with Book 1 of *Principles of Mathematics*.

- eCourse Supplement
- Helpful Resources
- Corrections
- Quiz/Test Grading Guide
- Three-Year Schedule
- Binary and Hexadecimal Notes
- Abacus Presentation (free preview of eCourse)

Found a resource helpful that’s not listed here? Have a question about the curriculum? Send us an email at info@christianperspective.net.

**eCourse Supplement**

Need more visual input? An optional eCourse component is be available. The eCourse features short videos to go with each lesson. View more.

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# Helpful Resources

**Note: All the links below go to external sights; we have no control over the content, nor is a listing here an endorsement. **Feel free to find other online resources instead–these are just listed here as a convenience.

#### Online Abacus

http://www.online-calculator.com/online-abacus/

#### Online Scientific Calculator

http://www.online-calculator.com/scientific-calculator/

#### Resources for Extra Worksheets

Below are some sites that offer printable worksheets if your student needs extra practice or drill on a concept.

- http://www.math-drills.com
- https://www.ixl.com/math/topics (Topics include measurement, ratios, fractions, etc. Once you select a topic, you can look for the specific part of the topic the student struggles with.)
- http://www.mathmaster.org/worksheet/
- http://www.worksheetworks.com/
- https://www.mathonthelevel.com/5-a-day-review/essentials (This is a for-fee service. The service will custom generate problems based on your choices of skills that need tested. A list of the concepts it covers can be found here.)

Fraction problems:

- Mixed Numbers: https://www.ixl.com/math/grade-7/convert-between-mixed-numbers-and-improper-fractions
- Equivalent Fractions: https://www.ixl.com/math/grade-7/equivalent-fractions
- Greatest Common Factor: https://www.ixl.com/math/grade-7/greatest-common-factor
- Least Common Denominator: https://www.ixl.com/math/grade-7/least-common-denominator
- Multiplying Fractions: https://www.ixl.com/math/grade-7/multiply-fractions
- Word Problems: https://www.ixl.com/math/grade-7/add-subtract-multiply-and-divide-fractions-and-mixed-numbers-word-problems

Percent problems:

- http://www.ixl.com/math/grade-8 (Look under “Percents.”)

Graphing problems:

# Three-Year Schedule

For students needing longer with each concept, here is a three-year schedule that shows you how to complete both books in 3 years.

## Binary and Hexadecimal Notes

**Understanding other bases is not a crucial concept; so long as students really grasps place value, you can let them move on.**

However, understanding other bases can help solidify the meaning of place value–and it’s pretty cool! Here’s an example of a hands-on idea for teaching the hexadecimal system. You could follow a similar approach for the binary system.

*12*rather than a set of 10.

*twelve*instead.

[…] Both my sons have now worked through Book 1 & 2 of Principals of Mathematics, and it has been exactly as I’d hoped. It has transitioned them very well into Algebra 1, with a little bit of overlap that has helped them ease into the Saxon course. I also purchased the e-course which has a video for each of the lessons, which we found very helpful. You will also find a few corrections and additional resources here. […]