Math Lesson: Classifying Angles

Lesson Opening

1. Remember, the geometry unit builds on itself. If you miss one day or you aren't paying attention, then you will have problems in the future. Please do your best to pay attention in class, otherwise you will be hopelessly behind and will have to be tutored in order to be caught up.

Guided Practice

1. Hopefully, you remember how to classify angles. If we had a protractor, we would measure the angles exactly. But we aren't concerned with exact, instead we care about how much the angle is.

1. You should be able to look at an angle and have a pretty good idea how big or how small it is. If you can do that, and if you can tell me whether an angles is right, acute or obtuse, you will understand most of the lesson.

1. One more thing, you also need to know how to find the measurement of an angle by looking at an angle adjacent to it.

1. Believe it or not, it's not as hard or as complicated as it seems. If I told you that together, my friend and I have $5 and then I told you I had $3, could you figure out how much he had? Of course.

Independent Practice

1. Students will complete the worksheets with a partner. Explain to them that they should do their work on their own and then later, if they have time, they should check their work with a partner.

1. Later, you can all go over it as a class. Remind them that this material builds on itself and that tomorrow, they will need to know how to do today's work.

Closing

1. Ask the children to put their answers on the board.