MP1 and MP3 are the main focus for Investigation 1.
students make different kinds of fourths in Session 2.1, having them
prove their pieces are all the same size encourages them to construct
viable arguments and critique the reasoning of others.
MP1 Make sense of problems and persevere in solving them. Student are specifically able to identify how equal parts of a whole group.
MP6 Attend to precision.Viable arguments can be constructed (MP3) when identifying how and why groups can be divided into equal parts. (Great review of odds and evens)
MP6 (attend to precision) is addressed when students create halves, thirds, and fourths by folding and cutting shapes.After a lesson focused on that, ask students how it would change things if they didn’t fold/cut their paper into equal parts.Why is it important to be accurate when folding and cutting with fractions?
DISCUSS THE FOLLOWING WITH YOUR GRADE LEVEL TEAM:
Look ahead to what students will have to do with fractions in 3rd grade by watching the video. How can we ensure students have a strong foundation in partitioning with fractions in order to prepare them for what is coming ahead?Discuss as a team.
Need to brush up on fractions?Read the teacher note on pages 77-78.
2.G.3- Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
Words you should hear students use in Mathematical Conversations...
fraction equal, half, halves, third(s), fourth(s), one quarter, circles, rectangles
Pair students up and have them sit back-to-back facing away from each other.Then each student chooses 2 different fraction words (one-half, four-fourths, one-third, etc.).Partner one will describe their fraction word without saying it while partner two will try to guess the word.Listen for students to use the words equal, parts, pieces, whole, etc.
Draw 2 of the same sized rectangles on the board and partition into fourths differently.Ask students to prove they are all equal fourths by using “Think, Pair, and Share” with a partner.Listen for students to use precise language while they are explaining.
More Tools for Teachers
Fraction Book List:
Give Me Half by Stuart J. Murphy
Let’s Fly a Kite by Stuart J. Murphy
Jump Kangaroo Jump! By Stuart J. Murphy
Grandfather Tang’s Story by Ann Tompert
The Hershey’s Milk Chocolate Fractions Jerry Palotta
Picture Pie by:Ed Emberly
The WISHING CLUB a Story About Fractions by Donna Jo Napoli
Piece=Part=Portion by: Scott Gifford
OPPORTUNITIES FOR DIFFERENTIATION...
Suggestions for students who fully understand…
Students who have a clear understanding of fractions
can write an argumentative piece explaining why equal shares of
identical wholes need not have the same shape.
*Remember to upload files
to share with others, or locate files to use, on the wiki. Be sure to
join discussion posts with other colleagues to ask questions, answer
questions, and discuss math.