Handfuls from Marilyn Burns

Co-Teaching Lesson

Grade 1, Nadia, Lisa, Nirpjit, David, Sajida

Thursday March 1, 2012

1 :00 to 2 :00

Lesson Title : Handfuls

Expectations : Create a set in which the number of objects is greater than, less than or equal to the number of objects in a given set.

Process Expectations: Select and use a variety of concrete, visual, and electronic learning tools and appropriate computational strategies to investigate mathematical ideas and to solve problems.

Three Part Lesson

Activation: Mrs. Foster wants to share gummy bears with the class.  This is Mr. Fox’s handful and this is Mrs. Foster’s handful.  Which handful has more?  How do you know?

• Anticipated responses and annotations include: comparing hand sizes; fish (more or less) symbol; ten frames; tallies

Lesson Problem:  You are playing Handfuls with your math buddy.  Each buddy takes a handful from one of the buckets.  Which handful has more?  Explain how you know.

• Anticipated strategies: Placing pieces in ten frames; Grouping into tens, fives or twos; lining up objects from handful; moving and counting by ones; number lines to count the sets

Independent Problem: You are playing Handfuls by yourself.  Take 1 handful from 2 different bins.  Which handful has more?  Explain your thinking.

Co-teaching Positions:

Nadia – leading discussion

Lisa – Recorder

Nirpjit – timer

David and Sajida – observe and take notes

Parallel Tasks

Kindergarten

Choose larger materials for the Handfuls to reduce the size of the numbers.

Set up as a game during center time.

Circle share after playing time.

Grade 2

1. Use smaller materials for the handfuls to increase the number of objects in the handful.

Increase to four handfuls, one of each material for each side.  Which sum is more or less?  By how much?  How can we move objects from one group to another to balance the equations?.

2. Each student takes a handful of money (pennies, nickels, dimes, quarters, loonies) and they estimate which handful has the greater value.  Then they figure out the value of each handful and decide how to balance the handfuls so that they have equal value.