Download Grade 2, Module 5 Common Core Focus Representing, writing

Grade 2, Module 5
Dear Parent/Guardian,
As children expand their understanding of our base-10 number system, it is important
to help them connect how a three-digit number (e.g. 356) is written as a numeral to
how it is said and written in words (e.g. three hundred fifty-six), and how that number
is modeled (e.g. 3 groups of 100, 5 groups of 10, and 6 ones). It is also important that
children connect the number to its position in relation to other numbers on a number
line (e.g. between 350 and 360). You can help your child become familiar with
three-digit numbers during everyday activities such as grocery shopping (comparing
prices) or traveling (reading highway numbers or ordering house numbers). It’s
natural (and fine) to use informal language (e.g. “is bigger than” or “is smaller than”)
when comparing numbers. You can also help your child become familiar with the
mathematical language such as “is greater than” or “is less than.”
Your child should already be able to skip count aloud (by twos, fives, tens, and
hundreds), starting from each of those numbers (e.g. starting at 10 and counting by
tens). A fun game is to take turns skip counting. First choose the number you will skip
count by (e.g. 100), then taking turns starting at any number and skip counting
(e.g. you say 23, your child says 123, you say 223 and soon on).
In Grade 2 geometry, new words relating to 2D shapes are introduced, for example,
“polygon” (a closed shape with all straight sides, e.g. a triangle), “quadrilateral” (any
four-sided polygon, e.g. a square), “pentagon” (any five-sided polygon), “hexagon”
(any six-sided polygon), and “octagon” (any eight-sided polygon). Polygons always
have the same number of vertices (corners) as they have sides, and the sides (and
angles) can be different sizes. It can be fun to take turns to think of a polygon in your
everyday surroundings or in a drawing, then offer hints about the shape so the other
person can identify or draw it. Games like this help your child learn to recognize key
features of shapes and use the language of geometry easily and accurately.
In this Stepping Stones module, the first four lessons involve representing and
writing three-digit numbers in numerals and words. The following two lessons involve
comparing and ordering three-digit numbers. The next two lessons build a foundation
for later work with angles. Then the final four lessons work with 2D shapes, focusing
on polygons.
© ORIGO Education.
Your Grade 2 Teacher
Common Core Focus
Representing, writing,
comparing, and ordering
three-digit numbers;
introduction to angles;
working with 2D shapes
(especially quadrilaterals
and some other polygons).
quadrilateral
pentagon
hexagon
octagon