All resources in Hawaii Math Common Core

10X Bigger!

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Students will explore multi-digit numbers and the relationship between ones, tens and hundreds; a digit in one place is 10x the digit in the place to its right. Students will use their bodies to represent digits in multi-digit numbers up to the hundredths place and compare these numbers using <, =, >. Students will use their bodies as multi-digit numbers to add and subtract.

Material Type: Activity/Lab, Teaching/Learning Strategy

Author: Admin

Alternate Multiplication Algorithms

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Students today develop proficiency with many different algorithms for multiplication. This approach insures that each student will find a method that works effectively for him/her. Teachers model the different algorithms and encourage students to use and practice each method before selecting a favorite.

Material Type: Activity/Lab

Author: Terry Kawas

To Regroup or Not To Regroup

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This task presents an incomplete problem and asks students to choose numbers to subtract (subtrahends) so that the resulting problem requires different types of regrouping. This way students have to recognize the pattern and not just follow a memorized algorithm--in other words, they have to think about what happens in the subtraction process when we regroup. This task is appropriate to use after students have learned the standard US algorithm.

Material Type: Activity/Lab

Author: Illustrative Mathematics

Sumo

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In this version of a Sumo wrestling bout, players use mathematical skills to move their opponent's counter beyond the track and "out of the ring." Learners reveal playing cards and the player with the large value card pushes their counter a number of spaces equal to the difference between the two card values multiplied by the lower of the two card values. Learners can also explore what happens when a zero card is added to the mix.

Material Type: Activity/Lab, Game

Authors: NRICH, Tony Reeves

Instructional Strategies for Mental Math

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These strategies support active student participation in math lessons and allow teachers to assess the developing proficiency levels of all students in the class by walking around to monitor student responses. These strategies are especially effective during the Mental Math part of an Everyday Mathematics lesson.

Material Type: Teaching/Learning Strategy

Author: Terry Kawas