This document outlines a 7-lesson mathematics unit on addition and subtraction taught between November 19-30. The unit focuses on practicing computation skills through word problems, graphing, and identifying patterns. Students are assessed throughout each lesson via teacher observation, math journals, and a pre-designed summative assessment on November 30 to evaluate their mastery of addition, subtraction, and data analysis skills.

1. MMaatthheemmaattiiccss UUnniitt 22:: AAddddiittiioonn aanndd SSuubbttrraaccttiioonn FFaaccttss
Lesson 1: “Thanksgiving Math” (Supplement)
Date Taught: Monday, November 19
The Main points of this lesson are to teach students:
 To practice Operations and Computation (addition and subtraction)
 How to use computation to solve grade-level word problems
 How to tell time using an analog clock
Assessment: The students will be assessed based on teacher observation and participation during Whole-
group while the class is going over the Thanksgiving Math packet and playing the Turkey math game. They will
be assessment at the end of the unit (Nov 30) using a pre-designed summative assessment
Lesson 2: “Community Can Drive Graph” (Supplement)
Date Taught: Tuesday, November 20
The Main points of this lesson are to teach students:
 To practice Operations and Computation (addition and subtraction) by counting the number of cans
collected by the class and grade level
 How to graph data and read a bar graph to determine growth in number of cans collected during the
Community Can Drive
Assessment: The students will be assessed based on teacher observation and participation during Whole-
group instruction of bar graphs. They will be assessment at the end of the unit (Nov 30) using a pre-designed
summative assessment
Lesson 3: “What’s My Rule? Routines” 2-11
Date Taught: Monday, November 26
The Main points of this lesson are to teach students:
 To identify missing numbers in number pairs that are generated by a rule
 To determine the rule used to generate the number pairs
 To use skills: Operations and Computations, Functions and Patterns
Assessment: They will be assessed using their personal Math Journal (page 47, problems 1 and 2). They will
be assessed out of 5 on their ability to demonstrate mastery of the skill practiced. They will be assessment at the
end of the unit (Nov 30) using a pre-designed summative assessment

2. Lesson 4: “Counting Strategies for Subtraction” 2-12
Date Taught: Tuesday, November 27
The Main points of this lesson are to teach students:
 To count up and back by 1s
 To use addition and subtraction facts to solve subtraction problems
 Using counting-up and counting-back strategies for subtraction
Assessment: They will be assessed using the students’ personal Math Journal (page 49, Math Boxes problem
3). They will be assessed out of 4 on their ability to demonstrate mastery of the skill practiced. They will be
assessment at the end of the unit (Nov 30) using a pre-designed summative assessment
Lesson 5: “Shortcuts for difficult Subtraction Facts” 2-13
Date Taught: Wednesday,November 28
The Main points of this lesson are to teach students:
 To use -8 and -9 facts to solve 2-digit by 1-digit subtraction problems
 To use patterns in subtraction facts to solve -8 and -9 facts
Assessment: The students will be assessed based on teacher observation and participation during Whole-
group instruction and review of the concept. They will be assessment at the end of the unit (Nov 30) using a pre-
designed summative assessment
Lesson 6: “Review and Game Day” (Supplement)
Date Taught: Thursday, November 29
The Main points of this lesson are to teach students:
 To use their skills of: Operations and Computations, Functions and Patterns
Assessment: The students will be assessed based on teacher observation and participation during Whole-
group review examples and cooperative group game participation. They will be assessment at the end of the unit
(Nov 30) using a pre-designed summative assessment
Lesson 7: “Review and Post-Test” 2-14
Date Taught: Friday, November 30
The Main points of this lesson are to teach students:
 To use their skills of: Operations and Computations, Functions and Patterns
 How to read a bar graph and answer questions about the data
Assessment: The students will be assessed based on teacher observation and participation during Whole-
group review examples and by using a pre-designed summative assessment consisting of 12 questions
summarizing the unit of instruction.