Number
Sentence Math Tray
Grade Level(s): Kindergarten - 1st Grade
Content Area: Process Area:
Numbers
and Operations Problem-Solving
Algebra Reasoning
and Proof
Geometry Communication
Measurement Representation
Data
Analysis, Statistics, and Probability Connections
Common Core Standards:
CCSS.Math.Content.1.OA.A.1 Use addition and
subtraction within 20 to solve word problems involving situations of adding to,
taking from, putting together, taking apart, and comparing, with unknowns in
all positions, e.g., by using objects, drawings, and equations with a symbol
for the unknown number to represent the problem.
CCSS.Math.Content.1.OA.D.7 Understand the meaning of
the equal sign, and determine if equations involving addition and subtraction
are true or false. For example, which of
the following equations are true and which are false? 6 = 6, 7 = 8 – 1, 5 + 2 =
2 + 5, 4 + 1 = 5 + 2
CCSS.Math.Content.1.OA.D.8 Determine the unknown whole
number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number
that makes the equation true in each of the equations 8 + ? = 11, 5 = _ – 3, 6
+ 6 = _
Targeted Needs of Student:
Counting
objects, solving math problems, working with manipulatives
Goal:
Understanding
number sentences through manipulatives
Materials Needed:
1. Three section trays
2. Objects to sort
3. Operation signs (+, -, and
=)
Explanation/Summary:
Students
will use this tray to show number sentences by placing objects in the tray. The
tray will have three sections, the first two which are separated by an
operation sign (such as + or -) and then the third tray is separated from the
second tray with an equal sign to show the end result of the number sentence.
Any object can be used, they just have to be small enough to fit multiples in
the tray. Also, have students solve problems such as 3 + ___ = 6 by not placing
any objects into the second slot in the tray.
Resource:
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