Using Properties of Operations to Multiply (Hofmayer) ^©

Description
Files

This lesson focuses on 3.OA.B.5 - using properties of operations to solve multiplication problems. Students work with drawing arrays to represent multiplication sentences having three factors. The teacher asks questions of the students and students discuss their mathematical thinking. Core Actions 2 and 3 are strongly exemplified in this lesson.

This video was annotated using this version of the Instructional Practice Guide (IPG). A current version of the IPG is available here.

Fatal error: Uncaught ErrorException: Array and string offset access syntax with curly braces is deprecated in /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/Raven/Client.php:316 Stack trace: #0 /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/Slim/Slim.php(126): Slim\Slim::handleErrors(8192, 'Array and strin...', '/mnt/stor9-wc1-...', 316, Array) #1 /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/Slim/Slim.php(126): require() #2 [internal function]: Slim\Slim::autoload('Raven_Client') #3 /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/index.php(1271): spl_autoload_call('Raven_Client') #4 [internal function]: {closure}(Object(ErrorException)) #5 /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/Slim/Slim.php(640): call_user_func_array(Object(Closure), Array) #6 /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/Slim/Slim.php(622): Slim\Slim->callErrorHandler(Object(ErrorException)) #7 /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/conten in /mnt/stor9-wc1-dfw1/627046/www.achievethecore.org/web/content/Raven/Client.php on line 316