Unit
Topic: Add and Subtract within 20
Grade:2
Lesson Topic:
Subtraction
Lesson
Objectives:
Given the website provided, the student
will be able to solve subtraction problems using mental
strategies already discussed in class.
The student will have less than 10
incorrect answers.
Instructional
Techniques:
Students will work independently to
complete the website activity. Students will work
independently to complete assessment. Students will work in
a group, as a class, to complete the closing activity.
Instructional
Materials:
Website: http://www.fun4thebrain.com/subtraction/pizzaSub.swf
Work sheet: Pizza Pizzazz Subtraction
Subtraction Assessment Worksheet
Large Color by Numbers Picture
Crayons
Pencil
Theoretical
Perspective:
This information is important for the
students so that they will be able to easily make
mathematical computations.
Subtraction is one of the basic skills of math. It is
necessary for
students to learn this area of math so
that they may understand all math in the future. It would
be very difficult to do mathematics
without this skill.
Procedure:
1. Show students the website homepage
2. Explain to students the back story to
go along with the website. The back story is this:
Morris the Mouse owns
a pizza parlor. He is very busy and needs your help serving
his customers. Can you help him deliver the pizzas to the
correct tables?
3. Give students instructions on how to successfully
navigate the website.
-First
have students click on the "Start" button on the homepage
-The next page
consists of pizzas with numbers and number groups
representing the
subtraction facts to practice.
Have students select the grouping 1-5.
-When the page
is opened, there will be a pizza parlor scene consisting of
a pizza with a subtraction problem next to it on the counter
and four tables with possible answers to the equation. From
here the students must drag the pizza from the counter to
the table that shows the correct answer.
-The number of correct
and incorrect answers is recorded on the bottom of the page.
-Tell the students
that once they finish a group of numbers, they must record
their number or "Correct" and "Wrong" math problems on the
handout provided by the instructor.
-Explain that once the
students have finished the answers in that group of numbers,
clock on the pizza at the bottom of the page that says "Play
Again?"
- Students should
repeat the process until they have completed all three
groups of numbers.
4. Hand out the Pizza Pizzazz worksheets and allow students
to complete work on the website.
5. After all students have finished, collect completed
worksheets and allow them to move back to their desks.
6. Explain Math Assessment worksheet.
-The math assessment is a timed worksheet
that all students are required to complete. The students
have a minute to correctly answer as many subtraction
problems as they possibly can.
-Once instructor has finished explaining
the procedure, they should pass out the assessments.
-When they are all ready, say start and
start the timer.
-Tell the class when time is up and to
put down their pencils.
7. Collect assessment and allow room for questions.
8. Explain Closure
C. Closure
1. Show students large balloon color by
numbers poster.
2. Explain how color by numbers works:
-Fill in the answer and the corresponding color is colored
in
3. Go around the room asking for answers
to the subtraction problems.
4. Whomever answers the subtraction
problem correctly may go up to the picture and color the
correct area.
-Repeat this process until entire picture is colored in.
5. Hang finished poster on the wall.
D. Adaptations for different learners
1. Read all directions
out loud carefully
2. Allow for questions
at every point in the lesson
3. Allow the option
for students to work together on the website as long as they
both complete the assignment and turn in their own
worksheets.
4. Allow students who
need it the option of taking the assessment orally or
provide them with extra time.
Evaluation:
Given the website provided , the student
will be able to solve subtraction problems using mental
strategies already discussed in class.
- This objective will be met
by the completion of the assessment worksheet given after
the work on the website is done.
The student will have less than 10
incorrect answers.
-The Pizza Pizzazz
handout will let us know if this objective is met.