Illustrate finding the sum of using a sequence of pictures…

Illustrate finding the sum of using a sequence of pictures as we did in class and on the handout.  Be sure to include all the following parts. a) Model the first addend b) Model the first and second addends c) Subdivide to find a common denominator d) Combine e) Model the sum f) Answer in digits: _____________

The Case of the Mystery Nebula Scenario: An astronomer disco…

The Case of the Mystery Nebula Scenario: An astronomer discovers a new nebula (Cloud X) and wants to determine its future. Observation 1: Spectroscope data shows that the light from the nebula is Blue Shifted. Observation 2: The nebula contains a star that is extremely bright (luminous) but has a low surface temperature (appears red). Question: Based on these observations, predict the movement of this nebula relative to Earth and identify the current life-cycle stage of the star within it. Explain how it is possible for a “cool” star to be so bright. (4 Marks)