# Sub (Guest Teacher) Plans

I hate having a sub. I hate missing time with my students. My stepdaughter is pregnant and she is due in about a month. I will be there. I know I’m going to have little notice & ill need a sub, so I decided to put together a few days worth of plans over the holiday break. All of it is created by others, none of it is mine, but I thought I’d put it out there anyway as substitute teacher options.

This is a challenging task. It may even require 2 class periods. It is self checking, self explanatory and great use of geometry students time. Requires application of congruence and transformations.

2) Intro Proof Axiomatic System – Justin Lanier

This set of activities requires students to use a set of rules to change a word into another word, and then to create their own axiomatic systems. This gets to the heart of geometry in a non intimidating way.

3) Four 4’s & Foxy 5’s

We have done some four 4’s as a warm up and It is clear that students could benefit from a class period (or more) of this. It allows for collaboration and it is easy enough for students to monitor their own progress. The Foxy 5’s I found recently on my idol, Fawn’s blog here.

I am getting each of these copied, and am writing up instructions and keeping them in a convenient place for the next semester. In my 10 years of teaching I have never had emergency lessons ready to go.  Now I have to resist the urge to use them ASAP because they are awesome tasks, and enjoy being prepared for anything!

What do you have your students do when you are gone?

[update 4/1: there is a great collection of sub plan ideas here]

# day 32: Plan B

So today I planned a awesome geogebra activity discovering angle measures with parallel lines & transversals, then I found out that the set of laptops with geogebra installed was taken by another teacher.

It worked out well because students were still confused about slopes of parallel & perpendicular lines, so we played with that more instead.

I had a sub Friday. It is the last time I’ll ever get a sub who represents himself as doing math. I’d prefer a sub who has no recollection of math concepts so that they can build understand of an activity WITH students instead of yelling at them for not properly writing the slope formula, or just blurting out ” perpendicular lines have a negative reciprocal slope” right before they start an exploration discovery activity. ARGH

# Day 31: Friday: sub & slope quiz

I mad a quiz that worked really well at exposing slope misconceptions of my students, but now I’m not sure what to do about it!