| CareerZone Lesson Plan Registry
http://www.nycareerzone.org/resources/lessonplans |
| Ratios and Rates |
| Author(s): Stephanie Anne Zigrossi |
| Grades: 8 - 8 |
| Subject: Mathematics, Science and Technology |
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| Learning Context:
OBJECTIVE: Students will demonstrate an understanding of ratios and rates by solving problems based on ratios and rates as they relate to various careers. MODELING: Subobjective #1 -Ratios Information- *Definition- comparison of two values *Written three ways-3:1, 3/1, or three to one *A ratio in simplest form is in the same units Strategy- *Model problems (see overhead), check for understanding and guided practice. Subobjective #2 -Rates Information- *Definition- comparison of 2 values of different units *Unit rate has a denominator of 1 Strategy- *Model problems (see overhead) check for understanding and guided practice. LEARNING STANDARDS: ELA #1,4 CD0S #1 MST #1,2,3 |
| Procedure:
ANTICIPATORY SET: A craft artist making holiday bulbs needs to rinse the inside of the bulbs with a vinegar and water solution with a ratio of three parts to one before the paint can be used on the bulb. Ratios being used by an artist, can that be? Have students brainstorm with their partners other ways ratios and rates are used in careers. Checking for Understanding: With their partners, students will answer each of the following: 1. Define a ratio in your own words. 2. Write the ratio 6/1 in two other ways on whiteboards. 3. Write the ratio of 3 days to 12 hours in simplest form on whiteboards. 4. Write the 27 students to nine computers as a rate in simplest form on whiteboards. 5. Compare and contrast ratios and rates. GUIDED PRACTICE: Students will work together in their groups of four to solve problems related to ratios and rates. Each group will be assigned a career and the problems they are to solve are relative to that particular career. Students (still in groups) will then go to a computer and log on to the "CareerZone" website. They will access the career that they have been working with and read the description as a group using a Rally Read method. The students will then individually write down five interesting facts about the career that they learned from the website. The students will also include if and how mathematics is used in the career. The groups will then regroup into new groups containing one person from each career. The students will use a Round Robin method to share their findings. CLOSURE: Using the sheet of SCANS skills, students will reflect on the lesson and identify which skills were used during the lesson. INDEPENDENT PRACTICE: Worksheet #43 |
| Instructional/Environmental Modifications:
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| Materials and Supplies:
1. Computers with Internet access 2. Whiteboards 3. Attached worksheets |
| Time Required:
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| Assessment Tools and Techniques:
1. Worksheets 2. Observations |
| Reflections:
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| Attachments:
Attachment 1 |