Number Talks : In - Depth

Mollie Hall

While you wait: http://goo.gl/eENkIB

IS THIS A NUMBER TALK?

• Guess My Number
• Rekenrek
• Books
• Number strings
• Random numbers

Number Talk
A strategy to build flexibility, accuracy, and efficiency in mathematical thinking through the articulation of and sharing of mental math strategies.

4 GOALS OF K-2 NUMBER TALKS

• Developing number sense.
• Developing fluency with small numbers.
• Subitzing
• Making tens

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4 GOALS OF 3-5 NUMBER TALKS

• Number Sense
• Place Value
• Fluency
• Properties
• Connecting Mathematical Ideas

WHAT MAKES A NUMBER TALK?

• Do you use mental math to solve the problem(s)?
• Are there multiple strategies used?
• Does the strategy carry throughout each number in the string?

YOUR TURN

• 1/2 an hour
• 1/2 a bottle
• 1/2 of a fuel tank's worth of gas
• 50%
• 1/2 price of $10,000

YOUR TURN

• 1/2 + 1/4
• 3/4 + 1/2
• 1   3/4 + 1/2
• 2  1/2 + 1  1/4

HOW DO I HOLD THE KIDS ACCOUNTABLE?!?

• Ask students to use finger signals to indicate most efficient strategy.
• Keep records of problems posed and the cooresponding strategy.
• Hold small-group number talks throughout the week.
• Create class strategy charts.
• Have students solve an exit problem (or weekly assessment) with discussed strategy.

CCGPS EFFECTIVE INSTRUCTIONAL PRACTICES GUIDE

OTHER RESOURCES

• http://goo.gl/yBFOuO

TIME FOR FLIGHT

QUESTIONS?