5.M.4 & 5.M.5 RTI Lessons

Misconceptions and errors may result if students don’t understand how finding the volume of a prism using unit cubes relates to finding the volume of a prism using its dimensions. Errors may also result if students: • add the dimensions, instead of multiplying.

• incorrectly find the number of unit cubes per layer.
• think that two rectangular prisms that have two dimensions the same must have the same volume.
• use subtraction instead of division to find the length of a missing dimension.

Practice and Building Confidence

Review the questions students missed on the assessment. This will help you find the misconceptions they have and specifics on their weaknesses, which may help guide your RTI teaching. The video below will show you how to find their test results and access the test questions.

These are the recommended lessons, in order, to build these students from their current level toward grade level. Use your professional judgement in choosing which pieces to use and the appropriate pace for the students in your group.

Talk to a member of the RTI Math Leadership Team:

• Lori Dickey
• Rachel Porter
• Diana Spence
• Matt Taylor
• Whitney Tharp
• Katie Wilson