Wednesday, February 29, 2012

Mystery powders in science

Reminders:
Please sign up for a parent-teacher conference, either for Thursday, March 15 or Friday, March 16. You should have received an email from Cindy with a link to the online sign up form. Please let Cindy or us know if you have trouble signing up.

We need help with laundry! Please let us know if you could wash some cleaning rags and dish towels this week.

Next Tuesday, March 6, please join us for the annual TBS Math Night. You should have received an email with a link to a letter from Zaq Roberts describing the evening. Fifth graders will meet in the Cerrito classroom with their families, and fourth graders in Strawberry classroom. Feel free to drop in any time from 6:00 to 7:30 p.m., but do allow at least 20 minutes for your student to show you how she or he is learning math, and play some games with you. We hope you can make it!

Homework
Reading log -
Don't forget to try the Word Hunt on the reading log.

Fourth grade math homework, due tomorrow

Purple group: Please complete the JUMP math packet, using the plastic protractor you received in class and your paper ruler.
Blue Group Homework: Angle measures work pages. Some problems require you to use the plastic protractor handed out in class today (taped to your homework).

Fourth grade math
Purple group:
After a mental math warm up, we used power polygons to estimate angle measures with benchmarks, like right angles (90 degrees), half-right angles (45 degrees), and one-third and two-third angles (30 and 60 degrees). Then students learned how to use protractors to measure angles more precisely. Since there are two different number scales on a protractor, students first need to decide whether the angle measure is more or less than 90 degrees, then use the appropriate scale.

Blue Group:
Today we used protractors to measure and label the angles on polygon shapes, then began work on the homework packet. The biggest challenge for the students is recognizing which scale to use on the protractor for the degree of the angle. The goal is to first determine if the angle is greater or less than a right angle (90ยบ).


In chem lab, students looked at the physical and chemical properties of 8 white mystery powders!