Archive for April, 2011

Geometrical Form of Long Division

Sunday, April 10th, 2011

essay help chat room In my training, I was shown how to do the geometrical form of multiplication (see math album 1 on albums page.) A couple of months ago I had some students who were struggling with division using the Stamp Game. They were not struggling because they didn’t understand it. They just didn’t like using the materials – they thought it slowed them down. Yet, they were unable to do long division purely in the abstract. If these were 2nd graders, I would have simply insisted that they continue with the stamp game. However, these are students brand new to the Montessori setting in 4th grade. So I worked through the Stamp Game with them making sure they understood each step, querying them at the right moments. Once I was sure they understood the logic behind it, I introduced them to the Geometrical Form of Long Division. Maybe this is already out there, but I have not seen it. I created the following lesson using graph paper, green, blue, & red pencils.

essay writing help service Download pdf of lesson: Geometrical_Form_Division

Lesson: Geometrical Form of Division

http://www.rise.edu.sa/paper.php?wri=compare-contrast-essay-thesis compare contrast essay thesis life without trees essay Sequence: After student is proficient with division using stamp game.

http://www.rise.edu.sa/paper.php?wri=free-essay-checking free essay checking georgetown essay Materials: Black, green, blue, red colored pencils; graph paper of appropriate size grid

http://www.rise.edu.sa/paper.php?wri=graduate-school-personal-essay-sample graduate school personal essay sample essay on flood Presentation 1: Illustration below

  1. Tell students you will show them the Geometrical Form of Division.
  2. Ask students to follow along with you. This is a lesson/activity that they must do in order to learn it. Teacher must do each step carefully and in full sight of each student. (I do this by holding clipboard with graph paper in front of me and giving the presentation upside down so students see the activity from their perspective.)
  3. Begin by writing problem in upper left corner of paper http://www.rise.edu.sa/paper.php?wri=sample-of-a-descriptive-essay sample of a descriptive essay outside of the grid area. Wait for students to finish writing problem. 4362 ÷ 3  (write in long form.)
  4. Ask how many times 3 can go into 4? “1”
  5. Begin in upper left corner of grid area. Color in one row of 3 in green.
  6. Mark number of rows above the thousands place in answer area.
  7. Ask how many are left over? “1”
  8. Ask them what they would do if it were the stamp game? “Trade it in for 10 hundreds.”
  9. Ask how many rows of 3 can you make with 13? “4”
  10. Color in 4 rows of 3 in red (**see picture for where to start.**)
  11. Write in number of rows (4) above the hundreds place in the answer area.
  12. Ask how many are left over? “1”
  13. Ask what to do? “Trade in for 10 tens.”
  14. Ask how many rows of 3 can you make with 16? “5”
  15. Color in 5 rows of three in blue (** see picture **)
  16. Write in number of rows (5) above the tens place in the answer area.
  17. Ask how many are left over? “1”
  18. Trade in for 10 ones.
  19. Ask how many rows of 3 can you make with 12? “4 with nothing left over”
  20. Color in 4 rows of 3 in green.
  21. Write in number of rows (4) in answer area above the units place.

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