Recognizing and analyzing word problems
Multiplying fractions with materials
Multiplying fractions with arrays and the standard
algorithm
Assignment July 31
Assn. 46: Explain in a video
a. how to draw an array diagram for a product of
two fractions (make sure your explanations of why your diagram is a sensible matches
the diagram you draw. This means if you are using an "of"
interpretation, that you have a subset-type-diagram, and if you are
using an "area of a rectangle" interpretation, you should use a
symmetric diagram).
b. Explain how to get from your diagram to
the standard algorithm for multiplication of fractions.
Instructions for explanation
videos
about fractions
Assn 51: Watch the videos, practice,
and ask
questions until you understand how to make sense of
the standard
algorithm for dividing fractions. Then make a video,
or write a detailed explanation for each way of
explaining the standard algorithm). You should be thinking
about how you could explain the division of fractions algorithm to a
class of students in a way that would make sense (grade level here is
5-8). Your goal here is to make the connections between one of
the informal ways of finding the solution to a division of fractions
problem to the standard algorithm for dividing.