Elementary Mathematics Kindergarten Unit 7
Subject: MathematicsGrade: Kindergarten
Timeline: 13 days
Unit 7 Title: Addition and Subtraction II
This unit will give the opportunity for students to revisit addition and subtraction. They will have the opportunity to compare numbers, as well as, work with the operations of addition and subtraction. The students will learn different strategies for addition and subtractions. The students will then be able to use manipulatives and song play to solve number stories. The students will extend their understanding of addition and subtraction through 10.
At the end of this unit, all students must be able to identify the addition sign and subtraction sign. Students must be able to complete addition and subtraction problems through 10 using manipulatives. Students must also be able to explain why they would add or subtract to solve number stories.
PA.CCSS.Math.Content.CC.2.2.K.A.1 Extend the concepts of putting together and taking apart to add and subtract within 10. (K.OA.1, K.OA.2, K.OA.5)
Mathematical Practice Standards:
#1 Make sense of problems and persevere in solving them.
proficient students start by explaining to themselves the meaning of a
problem and looking for entry points to its solution. They analyze
givens, constraints, relationships, and goals. They make conjectures
about the form and meaning of the solution and plan a solution pathway
rather than simply jumping into a solution attempt. Proficient students
check their answers to problems using a different method. They
continually ask themselves, “Does this make sense?” They can understand
the approaches of others to solving complex problems and identify
correspondences between different approaches.
#4 Model with mathematics.
proficient students can apply the mathematics they know to solve
problems arising in everyday life, society, and the workplace. In early
grades, this might be as simple as writing an addition equation to
describe a situation.
#5 Use appropriate tools strategically.
tools might include pencil and paper, concrete models, a ruler,a
protractor, a calculator, a spreadsheet, a computer algebra system, a
statistical package, or dynamic geometry software. Proficient students
are sufficiently familiar with tools appropriate for their grade or
course to make sound decisions about when each of these tools might be
helpful, recognizing both the insight to be gained and their
limitations. Mathematically proficient students at various grade levels
are able to identify relevant external mathematical resources, such as
digital content located on a website, and use them to pose or solve
problems. They are able to use technological tools to explore and deepen
their understanding of concepts.
#6 Attend to precision.
proficient students try to communicate precisely to others. They try to
use clear definitions in discussion with others and in their own
reasoning. They state the meaning of the symbols they choose, including
using the equal sign consistently and appropriately. They are careful
about specifying units of measure, and labeling axes to clarify the
correspondence with quantities in a problem. They calculate
accurately and efficiently, express numerical answers with a degree of
precision appropriate for the problem context. In the elementary grades,
students give carefully formulated explanations to each other. By the
time they reach high school they have learned to examine claims and make
explicit use of definitions.
Concepts - Students will know:
- Pathways to solve addition and subtraction problems through 10
- How to use manipulatives to solve addition and subtraction problems
- Strategies to solve number stories
Competencies -Students will be able to:
- Solve addition problems from 0-10
- Solve subtraction problems from 0-10
- Use manipulatives to solve addition and subtraction problems
- Solve number stories
- Kindergarten Checklist Components
Elements of Instruction:
use numbers, including written numerals, to represent quantities and to
solve quantitative problems, such as counting objects in a set;
counting out a given number of objects; comparing sets or numerals; and
modeling simple joining and separating situations with sets of objects,
or eventually with equations such as 5 + 2 = 7 and 7 – 2 = 5.
(Kindergarten students should see addition and subtraction equations,
and student writing of equations in kindergarten is encouraged, but it
is not required.) Students choose, combine, and apply effective
strategies for answering quantitative questions, including quickly
recognizing the cardinalities of small sets of objects, counting and
producing sets of given sizes, counting the number of objects in
combined sets, or counting the number of objects that remain in a set
after some are taken away.
lesson has differentiation options for each portion of the lesson.
Additional differentiation options are listed with directions and
student masters in the Teacher’s Guide.
- Math routines
- Literature books
Additional Resources / Games:
will play a variety of games that directly support the content of the
lesson and the overall goals for the unit. Games for unit seven included: