## Thursday, May 5, 2016

### The Sine Game

The Sine Game is just like The Line Game except with sinusoids. Click here to read about the line game.

For The Sine Game, you will project a sinusoid graph while the students find the matching equation, centerline, amplitude, phase shift, and period.

Click here shared google sheets presentation.

Click here for the 50 Game Cards.

Click here for the answer key.

## Wednesday, May 4, 2016

### Bring Your child to Work Day

My youngest son is in Kindergarten this year and I decided he was old enough to accompany me to work this year on Bring-Your-Child-To-Work day. He and I have been excited about this for weeks. I was so wired that I practically jumped out of bed that morning when my alarm went off. And he was so excited that he was ready a half hour earlier than normal.

Yup, he wanted to wear a crown and a cape. But he's not too far off; teachers are super heroes and royalty.

I know the shirt's too big for him, but the school was kind enough to give him the smallest size they have so he could participate in our dress down day. All students, teachers, and staff have this shirt and we

*try*to have everyone wear it on these days.
We were invited to a Biology class to see sheep eyes being dissected during my prep. It wasn't as bad as I thought. Actually, the inside of a sheep's eye is very colorful. We learned that the choroid looks something like this:

I wanted to make sure that the day's lessons continued and my son had a chance to participate. He greeted students at the door, handed out papers, collected papers, put starts on students' work, and took attendance.

He really enjoyed the day and I was worried about him having a lot of energy left over from not having recess, but I couldn't be more wrong. He fell asleep early that night and had a lot of trouble waking up the next morning.

When I came in the next day by myself I felt so lonely. It's strange how having him there just one day made a strong emotion in my like that. It really hit me when I saw his hand-writing desk plate:

## Thursday, April 28, 2016

### The Parabola Game

The Parabola Game is very similar to The Line Game. Click here to read about The Line Game.

However, for The Parabola Game the teacher will project quadratic equations in standard form and the students will match these 5 attributes to each one:

However, for The Parabola Game the teacher will project quadratic equations in standard form and the students will match these 5 attributes to each one:

- Graph
- Discriminant
- Vertex
- Table of Values
- Equation in Vertex Form

__Here are the resources:__## Wednesday, April 27, 2016

### Intro to Factoring Trinomials (a = 1)

My CP Algebra 1 classes have started factoring trinomial today, where a = 1. I have always enjoyed factoring trinomials personally, however many of my students don't share my enthusiasm. It baffles me that they don't enjoy this puzzle of sorts. "Can you think of two numbers that add to this and multiply to that?" I believe they don't see it as a puzzle because I don't present it as a puzzle. I changed that this year.

I started class by giving each student an index card. I asked them to write their name on the lined side and two integers from -12 to 12 except 0. Like this:

I started class by giving each student an index card. I asked them to write their name on the lined side and two integers from -12 to 12 except 0. Like this:

Next I told them to flip the index card over to the blank side and write the sum and product of the two numbers like this:

Once they were all finished I took the time to walk around the each student and make sure he/she added and multiplied correctly. It only took a minute but I did find a few mistakes.

Then the fun begins. Each student was to hold his index card so that the Add/Multiply side was showing and the two original numbers couldn't be seen. All students were asked to stand up and go from person to person and try to figure out their puzzle. In other words, "What were their original two numbers?"

The students really seemed to enjoy trying to figure out each other's puzzles. They especially liked when they stumped someone.

Overall, I think the activity was a success. But I did find this stink-poop drawing on the board after class so I'm not so sure anymore.

## Monday, April 25, 2016

### The Line Game - Linear Graph Review

__Educational Objective:__Review linear equations: slope, intercepts, equations, graphs, and solution ordered pairs

__Background:__I created this game a few years ago to help my students review linear equations. The students were doing fine with the topics when it was presented one at a time, but this game requires them to use all those topics at once. I remember one students saying, "I have never worked this hard in a math class!"

For the game, you will present the students will one graphed line at a time, they are required to match 5 attributes to that line as quickly and accurately as they can. To do this, the cards with the attributes are dealt to the teams randomly. The first team to identify a matching card will be rewarded with 5 points, the next correct team will receive 4 points, etc. until all 5 cards are matched.

If a team incorrectly identifies a card, they will lose 2 points from their score. Likewise, if a team has a matching card and doesn't recognize it, they will lose 2 points.

After all 10 lines have been displayed, the team with the highest score is the winner.

__Before Class:__Print and laminate the 50 game cards. Click here for the cards.

Print a copy of the answer key. Click here for the answer key. The answer key is the third page of that document. I laminated my copy of the answer key and use a dry erase marker to keep track of what cards have been matched during the game.

__Beginning of Class:__
Divide your class into five (5) teams and give each team ten (10) random game cards. Instruct them to look over the cards. Make sure each team member can see all the cards and the images being displayed.

Project the title screen of the presentation. Click here for the presentation.

__Game Play:__Display the first line and remind the students that there are five cards out there that match the graphed line (slope and y-int, slope and point, equation, two ordered pairs, intercepts). Once a team believes they have a match, they tell you the code on the bottom of the card.

The first correct team is awarded 5 points

The second correct team is awarded 4 points

The third correct team is awarded 3 points

The fourth correct team is awarded 2 points

The fifth correct team is awarded 1 point

If a team is incorrect, their score is reduced by 2.

If a team has a matching card, but doesn't recognize it, their score is reduced by 2.

Note - In order to avoid having teams with negative scores, you might want to start each team with a certain amount of points. Perhaps each team could start with 10 points.

Make the students aware that since the cards were distributed randomly, a team may have more than one matching card on a line, or even no cards that match a particular line.

After each line, instruct the students that those five cards will not match anymore lines and they can set them to the side. After each line, I like to go over any incorrect matches that the students made (not that they listen, but I try).

__Tips and Tricks:__- I do not let the students know that there are 10 lines. I tell them that there are 11, that way once we reach the 10th line they will still look to see if cards match rather than automatically calling out the codes. This only works the first time we play the game.
- Make sure all students can see the projection.
- Make sure all team members agree on a card before checking your answer key.

__Rules and Game Play Video:__
I apologize for the volume of this video. I had to turn my speaker all the way up to hear it and I will invest in a microphone in the future :)

## Wednesday, April 13, 2016

### Absolutely Valuable - Game Giveaway - April 2016

__Board Game Giveaway!!! April 14 - 22, 2016.__A few months ago I decided to give Adsense a try. Why not? It's free money. So, what to do with this free money? Well, a giveaway of course. The only reason I received any of this is because you are clicking on the ads on my blog page. So, keep clicking on those ads and I'll keep giving stuff away. Thank you!

From my first adsense income, I will send a copy of my game

*Absolutely Valuable*to one of you. All you have to do is click on the link below and follow the directions (you will need a Twitter account). That's it. Don't forget to click on an ad for brownie points while you're here.

## a Rafflecopter giveaway

Want to purchase your own copy of the game or just check it out? Click on this link.

For those of you who may not know, Absolutely Valuable is a game to help student solve absolute value equations graphically. This game was a finalist in the "Learning Game Challenge" hosted by The Game Crafter and The Pericles Group. You can recreate this game with just paper, bottle caps, and a deck of cards. Click here for my blogpost about that game.

Good Luck!

### Factoring Trinomials with Algebra Tiles - Part II (Negatives!!!)

Now we tackle factoring trinomials that have minus or negative signs. This time the blue tiles are positive and the pink tiles are negative. Each student was given a set of blue and pink tiles, while I made large tiles to use on the class white board.

Here's what I told my students:

If the last sign in the expression is minus (negative), then the positive and negative x tiles must be kept separate. For instance, the negative Xs are built to the right while the positive Xs are built down (or vice versa).

In the example below, we are factoring x^2 - 2x - 8. We start with a blue x^2 tile, 2 pink x tiles, and 8 pink 1 tiles.

I place the x^2 tile in the upper left like I always do and the 2 pink x tiles to the right of it. As you can see, the 1 tiles are just sitting there not fitting in to the rectangle.

There is where things get interesting, I hold up one pink x tile and one blue x tile and ask the students what is the sum of those two tiles. Eventually, they say 0. Then I ask if I would change the value of the expression if I add zero to it. Most students tell me that's okay.

To keep building, I can place one pink and one blue x tile, then fill in as many of the 1 tiles to complete the rectangle. If there are 1 tiles remaining, repeat the process. Finally you can see that the answer is (x + 2)(x - 4)

Here's what I told my students:

If the last sign in the expression is minus (negative), then the positive and negative x tiles must be kept separate. For instance, the negative Xs are built to the right while the positive Xs are built down (or vice versa).

In the example below, we are factoring x^2 - 2x - 8. We start with a blue x^2 tile, 2 pink x tiles, and 8 pink 1 tiles.

I place the x^2 tile in the upper left like I always do and the 2 pink x tiles to the right of it. As you can see, the 1 tiles are just sitting there not fitting in to the rectangle.

There is where things get interesting, I hold up one pink x tile and one blue x tile and ask the students what is the sum of those two tiles. Eventually, they say 0. Then I ask if I would change the value of the expression if I add zero to it. Most students tell me that's okay.

To keep building, I can place one pink and one blue x tile, then fill in as many of the 1 tiles to complete the rectangle. If there are 1 tiles remaining, repeat the process. Finally you can see that the answer is (x + 2)(x - 4)

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