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Dave'sMathNotations

DAVID MARAIN

Dedicated to Math Teachers Discussions of the what, the why and the how of math instruction from Birth to Infinity

Platform
Substack
PricingOnly free issues
PublishesDailyIssues34
SubscribersRead davesmathnotations.substack.com

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Latest Issues

Recent posts by this newsletter. Browse the email archive.

How Much Do You ‘Get Off On’ Percents?

#### Regular price discounted 10%, then sale price increases 10%, then that price is discounted 10% and finally latest price is increased by 10%. What’s the ‘overall ’ % discount?

a month ago
0
0

HELP ME, MATHIES. I'M TRAPPED!

Suppose you're a 2-dimensional object trapped inside of a square and a creature tells you the only way you can get out is to solve the following problem…

2 months ago
1
0

IN BASE 2: 1101 ÷ 2 = 110R1. FIND ≥ 2 WAYS!

When students are asked a question in a new language (including a computer language), the natural tendency is to translate to their native language, answer the question and then translate back. It is the same when working with other bases i...

2 months ago
0
0

In Base-3: 212++212+212+1=?

1. Do the calculation using base-3 computation. [For example in base-3, 2+2=11. Why?]

2 months ago
0
0

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Authors

The writers behind this newsletter.

  • DAVID MARAIN

    Retired math educator; Math supervisor, math consultant; writer of math problems that develop critical thinking for over 50 years. Here you will see my thoughts on math education, pedagogy in particular. SUBSCRIBE FOR FREE!

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