1. Topic-
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| Finding The Missing Measure Of A Missing Angle (Triangles) |
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2. Goals: Aims/Outcomes-
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| The students need to develop a sense of spatial, practical, and
numerical reasoning. They need to become aware that most math problems,
especially those that focus on measurement and geometry, can be analyzed
and solved by comparing them to real-life situations. By doing this,
students can make personal and logical connections to their work as
opposed to only working mentally with numbers. |
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3. Objectives-
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| Students will be able to find the measure of a missing angle within
a triangle. |
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4. Materials and Aids-
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| Pencils, Notebooks, Teacher-Made Worksheet, M&M's. |
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5. Procedures/Methods-
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A. Introduction-
| Students will be given 2 M&M candies on a napkin and instructed
to leave them on their desks. They will be told that they will be
able to enjoy the 5 M&M's they were given after the lesson. The students
will likely respond that they were only given 2 M&M's. They will be
asked how many M&M's are missing, and what information is necessary
to know how many are missing. We will label that information, which
includes identifying the "amount shown" and subtracting it from the
"total" in order to find what is "missing". |
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B. Development-
| The Students will then be asked how they think the M&M's lesson
could help them to find the missing measure of an angle in a triangle.
We will discuss how we could use the same thinking process to find
how much of the triangle is missing. We will identify that it is important
to know the "total" measure of each angle in every triangle, which
is 180 degrees. We will then need to subtract the "amount shown" by
the two angles that have been identified in order to determine what
is missing (just like the M&M's). |
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C. Practice-
| After discussing the comparison between our M&M lesson and finding
a missing angle, the students will be given problems to work on where
they must use the strategies discussed to find missing angles. Students
will be asked to come up and explain how they solved each problem,
and explain what information is necessary to solve each problem. |
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D. Independent Practice-
| Students will be given worksheets that contain problems to be worked
on independently. These worksheets will be collected and used to assess
which students met the objective, and which students are struggling. |
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E. Accommodations (Differentiated Instruction)-
| Students who are struggling will be grouped together while the other
students complete their worksheets. This group will use other real-life
situations and manipulatives, such as missing money, to make connections
to the work. |
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G. Closure-
| Once the majority of students have completed their tasks, the students
will be asked to verbally explain what they have learned. They will
then be asked to make a journal entry where they write about the lesson.
This journal entry will also serve as an assessment to determine whether
students objectives have been met. |
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