Teacher Soundboard
Categories
 Academic Language
 Algebra
 announcement
 Assessment
 Brainbasedlearning
 Calculus
 CCSSM
 Ed Tech
 Educational Research
 geometric patterns
 Geometry
 graphicacy
 icosahedron
 Leadership
 Learning
 mathematical reasoning
 Misc.
 Motivation
 PARCC
 Platonic
 Problem Solving
 Remediationand reducing it
 sequences
 statistical reasoning
 STEM
 Teaching
 technology
 testing
 Trigonometry
 Uncategorized

Recent Posts
Archives
 October 2020
 July 2020
 June 2020
 April 2020
 January 2020
 November 2019
 September 2019
 March 2019
 August 2018
 May 2018
 March 2018
 February 2018
 January 2018
 June 2017
 April 2017
 March 2017
 February 2017
 January 2017
 November 2016
 September 2016
 May 2016
 April 2016
 March 2016
 February 2016
 January 2016
 December 2015
 September 2015
 August 2015
 June 2015
 March 2015
 February 2015
Meta
Category Archives: Algebra
How to Graphically Interpret the Complex Roots of a Quadratic Equation
Very good stuff here. Nice mathematics, nice symmetry, nice visually! Nice paper with an explanation of what is going on by Carmen Melliger here. Good mathematics! Nice graphic by Shana McKay from Scaffolded Math. See also.
Posted in Algebra
Comments Off on How to Graphically Interpret the Complex Roots of a Quadratic Equation
Roots of Unity
on GeoGebra https://www.geogebra.org/m/sZFwAZfs
Posted in Algebra, Ed Tech, Geometry, Trigonometry
Comments Off on Roots of Unity
The CCSSM, and now the new SAT, have Moved the Needle
Introduction Two days ago I was at an excellent presentation on the new SAT test. It was at the WIU Mini Conference on Secondary Mathematics Teaching. For the second time in 3 years, I experienced, in one 40minute presentation, a … Continue reading
Posted in Algebra, Assessment, CCSSM, PARCC
Comments Off on The CCSSM, and now the new SAT, have Moved the Needle
Free Worksheets site – Kuta
https://www.kutasoftware.com/freeipa.html
Memoranda Mathematica: A Synopsis of Facts, Formulae, and Methods (1912 book)
At this the MathFest (Washington DC 2015) lecture by Richard Guy and John Conway I learned of a book from 1912. Probably only of interest to math geeks. (yep math geek alert) I find it interesting that this reference book … Continue reading
Great Reference Sheets (Math)
EEWeb has a very good Math Help page with numerous Quick Reference Sheets Algebra – Properties Geometry – Shapes and Solids Trigonometry – Definition (has unit circle) Trigonometry – Laws and Identities Calculus – Derivatives and Limits Calculus – Integrals … Continue reading
Spotting Numbers and Visual Patterns
Here a two great websites that provide lots of great pattern problems. Spotting Numbers Visual Patterns These patterns can be used with elementary students (if you just ask number questions) through advanced algebra (if you include questions about functions). Mathematics … Continue reading
Posted in Algebra, geometric patterns, Geometry, mathematical reasoning, Problem Solving, sequences
Comments Off on Spotting Numbers and Visual Patterns