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An ancient story revisited

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I think many of you will be interested in this video story!

It is an ancient story that was originally told almost 2000 years ago... Since that time, and even in today's modern world, many people have used the basic theme of that story as a basis for their own stories.



It is presented in a fascinating multi-media presentation form. Click the picture above to view the video!

Math Mammoth printed books sale!

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From September 12 till September 18, 2017, get Math Mammoth printed books at 20% off at Rainbow Resource Center. :)

Math Mammoth Skills Review Workbooks

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Here are some totally NEW Math Mammoth products!

Math Mammoth skills review workbooks have been designed to complement the lessons in Math Mammoth complete curriculum (Light Blue series).

These books are designed to provide a spiral review of the concepts in the curriculum, and to be used during the school year, alongside the main curriculum. After a concept or skill has been studied in the main curriculum, it is then reviewed repeatedly over time in several different worksheets of the workbook.

Each book contains 70-100 worksheets, and is divided into chapters, according to the corresponding chapters in the Math Mammoth curriculum. Each worksheet is designed to be one page, and includes a variety of exercises in a fun way without becoming too long and tedious.

You can choose exactly when to use the worksheets within the chapter, and how many of them to use. Not all students need all of these worksheets to help them keep their math skills fresh, so please vary the amount of work…

Favorite numbers poll

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Math Hombre conducted an unofficial favorite numbers poll... the results are interesting!

If you cannot wait to read the article, Pi is the winner!

Some pointers:
Phi is the golden ratio, a mathematically important constantThe number e is extremely important mathematically and ties in with exponential growth. In fact, of their list, e is my favorite!In case you don't know know why 42 made the top ten... it comes from the book Hitchhikers' Guide to the Galaxy and in that book it is made to be the "answer to the universe and everything" (a joke).
Check out the complete list here.

Babylonian tablet with simpler trigonometry than our own

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This is fascinating!

An ancient Babylonian tablet contains the world's oldest trigonometric table; but not only that.... it is also the only COMPLETELY ACCURATE trigonometric table, because of the very different Babylonian approach to arithmetic and geometry (using the base 60 instead of base 10).

This tablet uses simpler, yet more accurate trigonometry that has clear advantages over our own modern version. It's based on ratios instead of angles and circles.

It is rare that an ancient discovery could be teaching today's mathematicians something new but that seems to be the case here!

I'm sure many students would welcome a simpler approach to trigonometry!

https://www.theguardian.com/science/2017/aug/24/mathematical-secrets-of-ancient-tablet-unlocked-after-nearly-a-century-of-study

How to talk math with your kids - video

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Kent Haines is both a math teacher and a dad. In this video, he shares some excellent tips on how to help your children's "math-readiness", expressing it with a modern term. Or we might just say, how to help your children understand their world with math. It's aimed at parents of little children but the ideas ring true for other ages too:

The three important guidelines he shares are:

1. Use math language.
2. Play.
3. Focus on questions, not on answers.

I enjoyed the video!


Word problems involving "four times as many as"

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Someone asked for help to explain the concepts of multiplicative word problems involving "as many as", like the ones below:

1) Haley had four times as many dollars as her sister. Together they had $60. How much money does Haley have?


2) Rachel had 5 times as many dollars as her sister, Nora. They had a total of $90. How much money did each of them have?

The BAR MODEL is an excellent tool for helping children understand what is going on in these types of word problems.

In (1), draw a bar for Haley and another for her sister. Divide Haley's bar into four parts, and make the other bar just one such part long.

Haley |---|---|---|---|

Sister |---|


Now you will see that the TOTAL needs divided into FIVE equal parts — and from then on it is easy-peasy.



Additionally, you can use Thinking Blocks website to build such bar models INTERACTIVELY.

For problems like (1) and (2) above, choose the fourth model from the left (rightmost) in the top row that is bluish in color. Then click &qu…

Flash sale for Math Mammoth

Homeschool Buyers Co-op is running a FLASH SALE for the large Math Mammoth bundles — get them at 40% off! This sale ends on July 17, 2017.