Illustrations are from Sofi’s Student Main Lesson Book
To do this lesson:
Plain Paper or Main Lesson Book
1. Draw two parallel lines and then one line cutting across them as in the pictures above. Have your child copy you. You can make your drawing on paper (as I did) or on a chalk board.
2.Teach your child the vocabulary words “adjacent”, “congruent”, and “supplemental”.They need to know what these words mean in “regular” life before they can easily make the leap to learning them in “geometry world” so we talked about these words and made sentences like “Our neighbor’s house is adjacent to ours”, etc…Be sure to add these words to your spelling and vocabulary “treasure box”. You can also spend some time creating a story or poem with these words to help the child learn them. Sofi is creating a story using these words and some other vocabulary words. She will share it on this BLOG as she writes it.
3. Color designs on all the angles that will be of the same measurement. This is the first concept the child needs to learn. Once they color the designs they can easily see that angles are the same when they are A. Across from one another and B. Along the same “cut” line (see picture below)
4. Repeat Step One. This time draw circles and half circles and show, visually, how angles must add up to either 180 degrees or 360 degrees (see picture below).
5. Repeat Step One. This time draw circles around the vertex of both points (see picture below) and write the measurement of only ONE ANGLE. Have your child fill in the measurements of ALL SEVEN OTHER ANGLES.
If you have questions please leave a comment on this BLOG. I have tried to explain the process as well as I can. However, I may be leaving out something essential in understanding how we did the lesson. I welcome your comments!
Note: This post was originally posted on our old blog. We are still in the process of transferring hundreds of Waldorf homeschooling posts from the old blog to this one so you can find them all in one place. The old blog was functional from 2002-2010.