Resource Sharing by Arthur Lee

How to find resources

msalee — 2023-10-04 12:41:53 UTC

Representations

msalee — 2023-10-04 12:42:40 UTC

Square & rectangle areas compared

msalee — 2023-10-04 13:52:53 UTC

By asking students to compare the areas and reason about the change, they may make sense of algebraic expressions. In this case, expansion of an expression is done with a purpose. The factored and expanded forms are equivalent but carry different meanings.

transformation of functions

msalee — 2023-10-04 13:58:13 UTC

study the transformation of functions and graphs based on a context (open in Evernote)

log scale & transformation

msalee — 2023-10-04 14:00:40 UTC

compound interest

msalee — 2023-10-04 14:12:13 UTC

perpendicular bisectors

msalee — 2023-10-04 14:14:28 UTC

Is it easy to predict how the intersection will move?

missing area paradox

msalee — 2023-10-04 14:20:42 UTC

msalee — 2023-10-05 01:10:55 UTC

This padlet is an open space for sharing resources. Feel free to explore suitable means to build your resource package and e-portfolio.

successive changes

msalee — 2023-10-05 02:51:59 UTC

patterns with graphs

msalee — 2023-10-05 02:57:24 UTC

Desmos activity: create patterns with graphs

parallel lines and angles

msalee — 2023-10-05 03:03:55 UTC

Desmos activity: parallel lines and angles

ratios of lengths and areas

msalee — 2023-10-05 03:09:20 UTC

Desmos activity: ratio of lengths and areas

Geometry Tasks from Internet Archive books

msalee — 2023-10-05 03:34:36 UTC

balance scale puzzle

msalee — 2023-10-05 04:52:22 UTC

This is an example of balance scale puzzle made in Polypad. There is a link to more info about building this kind of puzzles and planning a lesson. (more from this page)

interpreting equations

msalee — 2023-10-05 05:22:16 UTC

a model for multiplication

msalee — 2023-10-05 07:38:22 UTC

number line in PhET

msalee — 2023-10-05 07:54:16 UTC

There are 3 simulations in PhET related to integers on a number line:

Bucket of Zero

msalee — 2023-10-05 08:36:37 UTC

Modelling addition and subtraction of directed numbers as collection of tiles

Try it in Desmos

Powers of 2

msalee — 2023-10-05 12:09:15 UTC

open GeoGebra page: https://www.geogebra.org/m/rzzexnyu

msalee — 2023-12-04 02:14:11 UTC

Percentage Change introduction

msalee — 2023-12-08 03:22:52 UTC

class activity on log table

wykmathteam — 2025-03-18 13:40:57 UTC

worksheet on perfect square identities

wykmathteam — 2025-03-18 13:46:25 UTC

area model

wykmathteam — 2025-03-18 13:47:35 UTC

wykmathteam — 2025-03-18 13:49:38 UTC

completing the square by using Polypad

wykmathteam — 2025-03-18 13:53:53 UTC

Unit Circle & Trigonometry

msalee — 2025-05-14 11:02:14 UTC

Nov 3, 2021 (Unit Circle & Trigonometry)
- We studied some examples in GeoGebra and Desmos related to trigonometry and unit circle.
- I recommend the teaching strategy explained by W.W. Sawyer.
- main recording

see the GeoGebra tasks involved (a section about Unit Circle in a GeoGebraBook of Trigonometry)
some Desmos activities with similar pedagogical design:
- Unit Circle Trig (part 1 and part 2)
- some questions based on DSE paper 2
- another interesting example of circular stitching in Desmos