Unit Plan Template - Intel Engage

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Unit Author

First and Last Name:

Bergin.G

School District:

Kanyakumari, Tamil Nadu, India

School Name:

SH MS Kadayal

School City, State:

Tamil Nadu

If your Unit Portfolio is chosen to be uploaded to the Intel® Teach to the Future database or used as a sample in future materials, do you want your name displayed as the author?

Yes

No

Unit Overview Unit Plan Title:

Rounding

Curriculum-Framing Questions

Essential Question Unit Questions

What is meant by approximation? 1. Why should you round off a number? 2. How do I go about rounding off a number? 1. Round each of the following numbers to the nearest 10. a. 213 b. 829 c. 1293 d. 8956 e. 581

Content Questions

2. Give these teaching times to the nearest 5 minutes. a. 42 min b. 36 min c. 56 min d. 29 min e. 58 min

Unit Summary:

We use rounded information all the time. Each actual figure is either above or below the approximation. But if the rounding is done correctly, you can find out what the maximum and the minimum figures really are. For example, if you consider that the number of matches in the packet is 30 which is rounded to the nearest 10. The smallest figure to be rounded up to 30 is 25, and The largest figure to be rounded down to 30 is 34 (because 35 would be rounded up to 40). So there could actually be from 25 to 34 matches in the packet. In this lesson students learned the concept of rounding off a number.

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Subject Area(s): Click box(es) of the subject(s) that your Unit targets

Business Education Engineering Home Economics Language Arts Music School to Career Social Studies

Drama Foreign Language Industrial Technology Math Physical Education Science Technology

Other: Other: Other:

Grade Level: Click box(es) of the grade level(s) that your Unit targets

K-2 6-8 ESL Gifted and Talented

3-5 9-12 Resource Other:

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Student Objectives/Learning Outcomes:

Mathematics Objectives: Students: 1. The learner will estimate by rounding off numbers to the nearest 10 or 100 2. Work like scientists to plan, conduct, analyze and report the results of a discrete activity. 3. Gather, extract, and organize numerical information. 4. Develop approximation technique. Process and Technology Skills: Students use a science journal to: 1. Document the methods of their investigation in an organized way, with a complete hypothesis, experimental design, results and conclusion 2. Write reflective responses to teacher queries throughout the course of the unit 3. Work cooperatively in small groups Student Web Site Objectives: Students will use Microsoft Publisher to produce a classroom web site. The content of this web site will include: 1. Why we rounding off a number? 2. Practical problem related rounding off number. 3. Suggested materials for carrying out The Great Bean Race 4. Write about rounding of numbers in school blog. Procedures:

When you are rounding to the nearest hundred, look at the TENS DIGIT of the number. 

If the tens digit is 0, 1, 2, 3, or 4, then the hundreds digit does not change. You are rounding down.  If the tens digit is 5, 6, 7, 8, or 9, then the hundreds digit increases by one. You are rounding up.  All the other digits after the hundreds digit (tens digit and ones digit) go to zero in both cases.  All the other digits before the hundreds digit (thousands digit) stay the same in both cases. Activity -1 Give these learning times of the children at home to the nearest 5 minutes. a) 34 min

b) 57 min

c) 14 min

d) 51 min

f )13 min

g) 44 min

h) 32.5 min

i) 3 min

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e) 8 min j) 50 s

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Activity -2 Number of students participated in three cultural activities are approximated as follows: Elocution

Painting

Essay writing

80 students

120 students

60 students

(to the nearest 10)

(to the nearest 10)

(to the nearest 10)

Which of these sentences could be true and which must be false with respect to above data? a) b) c) d) e) f)

There are 79 students participated in Elocution. There are 123 students participated in Painting. There are 55 students participated in Essay writing. There are 84 students participated in Elocution. There are 129 students participated in Painting. There are 64 students participated in Essay writing.

Activity -3 Draw a mountain on the board. Put a 0 at the left and right base of the mountain and 5 at the top of the mountain. Write the numbers 1 - 4 up the left side of the mountain and 6 - 9 on the right side of the mountain.

Construct a car with a cardboard. Drive the car over that numbers 1 -4 and discuss whether it will roll up the hill to the next number or back down to the lower number. We talk about the fact that a car won't roll up so the number rounds to the lower number.

If the number ends in 6 - 9, if we repeat the process with the car, discuss whether it will roll forward or backward when I look at the view, and round to the higher number. If the number is 5, we determine that the engine end of the car probably weighs more than the empty trunk, so the car will roll forward to the higher number. This has worked well with at-risk students in summer school and with various levels of math students during the year. Sometimes, I'll give them a piece of construction paper with a mountain and a small toy car so they can work problems at their desk.

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Approximate Time Needed:

Two to three days. Prerequisite Skills:

 

Functional keyboard and mouse skills (typing, navigating, copying, pasting and saving on a computer) Ability to find out place value of a number.

Materials and Resources Required For Unit

Technology – Hardware: (Click boxes of all equipment needed) Camera Laser Disk Computer(s) Printer Digital Camera Projection System DVD Player Scanner Internet Connection Television

VCR Video Camera Video Conferencing Equip. Other:

Technology – Software: (Click boxes of all software needed.) Database/Spreadsheet Image Processing Web Page Development Desktop Publishing Internet Web Browser Word Processing E-mail Software Multimedia Other: Encyclopedia on CD-ROM Resources:  Materials used to do activities. Books : rd Printed Materials:  3 , 4th maths standard books from Tamil Nadu text book society. Other Print Materials  Teacher-made materials, white board, marker, work sheets.  Evaluation Tools: Content Rubric, Newsletter Rubric , PPT Rubric. Internet Resources:

For Teachers:

http://www.mathcats.com/grownupcats/ideabankrounding.html

Accommodations for Differentiated Instruction

Slow learners

 Shorten assignments, or allow more time as needed.

Gifted Student:

 Encourage the gifted student to investigate related topics and make a report to the class. Example: Teacher can ask the children to prepare the study time in their home round to 5 minutes.  If the student has special technical abilities, apply these to the development of the class Web page.  If the student has special writing abilities, allow the student to take the lead on e-mail correspondence between classes.

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Student Assessment:

Key Word Search:

Maths Learning Assessment: Students will write responses to prompts presented by the teacher. These responses serve as the basis for evaluating science concept development during the course of the unit. Student Newsletter Assessment Students will also be evaluated on the science/language arts content as well as their technological skills in their newsletter. Student Web Page Assessment: The web page is a collaborative classroom effort. This assignment will be assessed by self, peers and the teacher using the collaborative rubric. Rounding of a number, approximation,

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