Corps of Discovery Land of the Empire Builder Watermelon vs. Seed



Math

Geometry!
We begin our unit on Geometry the first week back from Winter Break. We're going to be covering so many new topics in this unit, it will be very important to keep practicing what you're learning otherwise, you'll lose it!

Our first lesson will surround the third dimension. We've learned X and Y as length and height, but now we have a Z measurement, which adds depth.
Here are a few paper folding web sites to help refresh your memory of edges, faces and vertices.
- Simple Paper Folding
- Traditional Crane Oragami
- Complex Paper Folding
- Insane Paper Folding Art

(this city took a Japanese Origami Artist 4 years to create)


Online Math Practice

Multiplication Facts
x2
x3
x4
x5
x6
x7
x8
x9
Mixed


Division Facts
2s
3s
4s
5s
6s
7s
8s
9s
Mixed


Sunnie Dog
Drawings!
GeckoBucks
Mr. Stephens' Writing Journal
Fourth Grade
gPodCast

Episode 1: Order of Operations

Download practice sheets: With directions / Without


Episode 2: Equivalent Fractions

Oregon State Math Standards for 4th Grade
4.1 Number and Operations: Develop an understanding of decimals, including the connections between fractions and decimals.

4.2 Number and Operations and Algebra: Develop fluency with multiplication facts and related division facts, and with multi-digit whole number multiplication.

4.3 Measurement: Develop an understanding of area and determine the areas of two-dimensional shapes.

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