This document provides an overview of the Grade 1 mathematics unit on number relationships and computation. The unit objectives are for students to develop skills in counting, comparing quantities, and representing numbers using models like ten frames and number lines. Key vocabulary terms are introduced, such as set, ten frame, and part-part-total. Suggested at-home activities reinforce the unit concepts through counting practice, using ten frame cards, and creating part-part-total problems.

1. Grade 1 Mathematics Unit Preview
Quarter 1: Number Relationships and Computation (Number Development 1)
Objectives: (Your student will be able to)
• Count forward and backward starting with numbers other than 1.
• Increase and decrease a set by one more, one less, two more, and two less.
• Identify two sets as equal or not equal.
• Construct models of numbers using a ten frame. Ex - is 4
• Construct a set by combining subsets to show a total using a ten frame.
• Locate numbers on a number line up to 50. For example,
Vocabulary: (Words your student will need to understand)
• Set: A group of objects or numbers • Ten Frame: A set of 10 boxes, 5 on top, 5 on the
bottom, that is used to represent quantity.
• Part-Part Total: Part + Part = Total
Activities to do with your student (in addition to homework, optional):
• Practice counting with your student while doing various activities – driving in the car, playing outside, waiting
in line at a store etc.
• Flash ten frame cards and ask students to tell you the number on the card without counting the dots.
• Show your student a ten frame card and ask them to tell you what one more or one less than that number
would be.
• Create a part-part-total mat and use beans or counters to create and solve problems with your student.
© Elementary Mathematics Office, Howard County Public School System, 2011-2012
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