In looking for a math-related art project that could be displayed on the hall bulletin board, I found this activity on the internet. Although the author (Zachary Brewer) lists this as an activity for adding numbers to equal 999, I believe it is more focused on breaking 999 apart into four components. Breaking numbers apart is a very important thing for students to be able do and understand. John Van de Walle says this about whole-part-part relationships: “To conceptualize a number as being made up of two or more parts is the most important relationship that can be developed about numbers” (Van de Walle & Folk, Elementary and Middle School Mathematics, Can. Ed., 2005, p.98) .
Brewer shows pictures of his art activities on his website and offers a book with templates for all the projects. I have not yet purchased the book with the templates, but, being in a hurry, just created the necessary bits and pieces myself for students to do the activity.
I created a page with the base-10 representations on it: 9-100 grid squares, 9 “ten strips” and 9 tiny ones blocks. I also created a page that has the number 999 in a box along with four blank boxes in which the students would write the numbers that they broke 999 into.
Because I have short blocks with my Wednesday math classes, I prepared the 12″ x “18” pieces of construction paper for the students by drawing two black diagonal lines, creating four spaces on each sheet.
Each student received:
- a large piece of construction with diagonals marked
- a page with 999 in base-10 representation (download my version here)*** I have changed this from a .tif to .pdf — it works better now!
- a small sheet of boxes, one with 999 in it and four to fill in. (download my version here)
- four different light-coloured markers, highlighters, or pencil crayons (all work well)
- a pair of scissors
- a glue stick
Thanks Carollee,
I’m going to do this with my grade 3s this week. I know they’ll have fun. I looked at Brewer’s other ideas and would like to get the book. Thanks again!
Hello Carollee, I enjoyed your session at CCTCA Teachers Convention this week. As per your handout, I have come to this site to browse and reinforce some of the concepts and ideas we looked at during your session. I just wanted to thank you for your site. It is so full of ideas and practical information. Most of all, your material follows a rationale that just makes so much SENSE. Barbara Thurston Grade 3 – 4, Taradale School, Calgary Board of Education.