Angle Pair Relationships Proofs INB Pages

I shared some of this last year, on my Beginning Proofs INB Pages post, but this year I did things a little differently.

I used this flapbook for the angle pair theorems and postulates.  This time, I had my students write out the theorems underneath the flaps and also write the shorthand they are allowed to use in proofs.  I leave my honors students a little more open-ended so that they have to fill in important information themselves.  I'm trying to help them learn how to be good notetakers.  I can't just turn them lose though, because most of them are freshmen!



This year, I added this page with two practice proofs.  It is now part of the exclusive content in my geometry foldable bundle.  I think it helped my students understand the proofs a little but better and I'm SO GLAD I had my students do the proof of the theorem.  I don't think I prove theorems enough in class and this was a good addition to the lesson.


I'm happy with the way this lesson has evolved over the years.  I think the Congruent Complements/Supplements Theorem are hard for students, but proving the theorem did help.  I think this is the best that I've taught it, and my students are comfortable with all of the theorems. 

Classroom Management: 3 Ways to Stay Calm and Consistent

I’ve heard over and over in my career that you can’t teach anything until you have a handle on classroom management.  If your kids are out of control, you cannot teach them anything.

There are multiple classroom management strategies out there.  You have to use whatever works for you.  HOWEVER, these three tips will work with whatever kind of classroom management system you already have in place.

3 Ways to Stay Calm and Consistent

Need classroom management ideas for middle or high school?  This strategy gives tips and techniques to help you keep your cool!

1 - Take deep breaths and relax your jaw.

If you aren’t in control of your emotions, the students will control them.  Before you react to anything, take a few deep breaths and relax your jaw.  Relaxing your jaw will help your whole body follow suit.  If you have trouble relaxing your jaw, put the tip of your tongue on the roof of your mouth and move it back.  Your jaw will fall and relax naturally.

2 - Move slowly.

As the leader in the room, you must project calm.  Calm is slow.  Slow is strength.  Strength is control.  Take a few seconds to S-L-O-W-L-Y and deliberately turn toward disruptive students.  When your body goes into the fight/flight reflex you react quickly.  Slow and deliberate movements show control over your body.

3 - Don’t make rules you aren’t willing to enforce ALL THE TIME.

Consistency is key.  Don’t make rules you know you won’t enforce.  I’m very laid-back as a teacher.  I’ve decided what rules are important to me, and I let the rest go.  While this doesn’t work for everyone, I do not make rules that I know I will end up letting slide later.  This one was a game changer for me.  When I first started teaching, I had lots of rules and I wasn’t consistent about enforcing all of them.  It did not work out well.  Again, don’t make rules you aren’t willing to enforce ALL THE TIME.


How do you stay calm and consistent?  Comment below!


Interval Notation INB Page

Last year, our math standards were revised.  In that, I now get to teach my Algebra 2 students how to write in interval notation.  Honestly, I strongly prefer interval notation and I'm so glad we could end the inequalities!

This notes page was taken from A Nelson Math.  I reformatted to include practice problems on the bottom.

interactive notebook pages for interval notation in algebra 2

I had students tape the top page down so that they could flip it up.  Underneath, I had them draw a table.  On the table, they wrote the interval in words, drew a number line, wrote in interval notation, and wrote in inequality notation.  It helped my students so much to be able to see the four versions together.  My students still struggled with things like x =/ 0, so I want to maybe do four or five example lines next year.

interactive notebook pages for interval notation in algebra 2


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