Copyright © Swun Math Grade 8 Unit 3 Constructed Response Rubric TE

Unit 1 ∙ Constructed

ResponseSCORING RUBRIC

Unit 3 ∙ Constructed Response

Scientific Notation

TASK 1: Scientific Notation

Answer/Exemplar Standard Points

1a.

8.EE.3 6

2a. 6.53 x 10^4 ─ 7.89 x 10^3 8.EE.4 1

2b. 5.741 x 10^4 8.EE.4 1

3a. 3.626 x 10^0 8.EE.4 1

3b. Process: Student should multiply by

Explanation of Steps: To prove that my answer is correct I must

multiply the size of the Southern Ocean, , by my answer

from 3a. The product is the size of the Indian Ocean that I was

given in the table, which means that my answer is correct.

8.EE.4 1

3c. 2.52 x 10^8 8.EE.4 1

3d. In 3a, I had to divide the area of the Indian Ocean by the area of the

Southern Ocean. So, I subtracted the exponents to find the final

power of ten in my answer. For 3c, I was given how many times

larger the area of the Pacific Ocean was than the area of the

Atlantic Ocean, and given the size of the Atlantic Ocean. Therefore,

I only had to multiply these two numbers. I added the exponents

to find the final power of ten in my answer.

1

Decimal or Whole Number Scientific Notation Example

a

40 m Height of a tree

b

0.035 m Length of a cockroach

c

60,000,000 m

Distance between

planets

d

0.0009 m (^) m Thickness of a coin
e
3 m
Length of a truck
f 9,000 m Height of a mountain