221 threads found:
- Subtracting fractions with borrowing
Focusing on the understanding of fractions, rather than "rules" when teaching subtraction of fractions with borrowing - Date of thread's last activity: 7 January 2007 - 17-gon with straight-edge and compass
An explination of Gauss' construction of a heptakaidecagon (17-gon) using a ruler and a compas - Date of thread's last activity: 14 October 2009 - Distance from a point to a line.
Derivation of formula for finding the distance from a point to a line, given the point and the equation of the line. - Date of thread's last activity: 5 April 2002 - Division
An explanation of various types of division. - Date of thread's last activity: 29 December 2015 - Problem solving
Help with providing full explanations of answers to word problems. - Date of thread's last activity: 3 December 2007 - Quadratics
The origins of the word quadratic. - Date of thread's last activity: 2 December 2007 - A different way to subtract than normally taught
Examples of ways to subtract numbers without using traditional "borrowing" - Date of thread's last activity: 12 February 2013 - Decimals, even numbers, fractions, and order
Some ways to explain various properities of numbers to students - Date of thread's last activity: 2 November 1999 - Rounding off-Estimation
Visualizations for helping students to understand rounding numbers - Date of thread's last activity: 16 October 2000 - Estimation
The difference between methods for estimation: front-end, reasonableness, clustering, compatible numbers - Date of thread's last activity: 19 October 2009
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