Math Links for Week Ending Jan. 19th, 2018

For some teachers, having a clear and exact plan when executing a lesson is very important. For others, they fly by the seat of their pant. If you are part of the former, then you might like this new-ish feature from @Desmos where you can get a teacher guide for any activity (theirs, yours, or someone else's). The guide, has checklists, screenshots, teacher notes and a place for your own notes. To access the guide just click on the Teacher Guide button that appears on each Desmos activity now (even ones you made yourself). Read about it at the link below and then check it out yourself.
Curriculum Tags: All
http://blog.desmos.com/post/169633045802/friday-fave-for-january-12

I have always been a fan of the area formula for a trapezoid. Why? because it's often dismissed but it can actually be used to determine the area of a parallelogram, rhombus, rectangle, square and even a triangle. So I made this demo sketch that basically shows the calculations using the trapezoid formula and the traditional formula for each shape. And it's dynamic so you can drag the points to see the calculations change in real time.
Curriculum Tags: Gr7
http://engaging-math.blogspot.ca/p/web-sketches.html

Do you want a fun way to talk about unit rates? Then you might find this @desmos activity called Click Battle. I like how it starts with students seeing how fast they can click and that's the hook to helping them use and understand unit rate.
Curriculum Tags: Gr8, MPM1D, MFM1P, MAT1L, MAT2L
http://blog.desmos.com/post/169360063287/friday-fave-for-january-5

If you are a user of the @OnMathies tools then you know that they are continually improving them. One new improvement is that you now have the ability to save documents in the NotePad app. This is helpful if you want to create stuff ahead of time to use in class or for your students to open and play with.
Curriculum Tags: All
http://mathies.ca/learningTools.php#Nn0

In grade 8 in Ontario we are supposed to classify quadrilaterals by their diagonal characteristics. This quadrilateral card sort from @theshauncarter could be a nice way to bring some prior knowledge up when starting that lesson.
Curriculum Tags: Gr8
https://primefactorisation.com/blog/2018/01/09/quadrilaterals-card-sort/

 Looking for some tips on how to become more productive in your teaching? Then check out @MrOrr_Geek's post on his top 10 tools. Watch the video and then read the post for more details.
Curriculum Tags: All
http://mrorr-isageek.com/10-tools-in-my-teaching-day/

I have probably posted this picture before but this is the first time that I have seen this version. The annotation is done by the company who built the ramps. If you want to see video of the actual jump, click here.
Curriculum Tags: MPM2D, MFM2P, MCF3M, MBF3C, MCR3U
https://ctconstructions.wordpress.com/ctconstructions/

A nice problem for geometry from @LauraWheeler
Curriculum Tags: MPM2D, MFM2P
https://twitter.com/wheeler_laura/status/954384448681787392

Drew this Triangle Pileup for #MFM2P for Monday. Our last #3ActMath task of the semester.
What do you notice?👀
What do you wonder?🤔#mtbos #iteachmath #ThinkingClassroom pic.twitter.com/yeNmtBLxpi

— Laura Wheeler (@wheeler_laura) January 19, 2018