A teacher is working on finding percents of numbers and displays the problem 20 of 45 = ? He asks, What's the answer to this problem, Jack? After thinking a few seconds, Jack responds, 900. Based on research examining teacher feedback, of the following, what is the best teacher response?
a. Not quite, Jack. Can someone help Jack out on this one?
b. Not quite, Jack. It's point two zero times 45.
c. Not quite, Jack. Remember, the first thing we must do is change the percent to a decimal. What is the decimal equivalent of 20?
d. Not quite, Jack. The answer is 9 . Now, think about that one for a minute while the rest of us look at another problem.
Question 2
Siri is teaching her students how to regroup. She uses some interlocking cubes to assist her students' understanding. The use of these and other manipulatives in mathematics classes is best related to the concept of:
a. focus.
b. working memory.
c. metacognitive knowledge.
d. transitional signals.
How locust numbers might be correlated with predation.
How to solve a distance, time, speed problem using linear algebra
Solution to exponential problem
finding the resultant force
Math problem
Illustration of mitochondrial swapping, working with oocytes from rhesus monkeys