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Mathematics
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The Co-ordinates – A Game
Geo-Engine (Std I)
Rythmic Maths (Std I)
Adding in many ways (Std I)
Calculative Colouring (Std II)
Number Race (Std II)
Mental Trial (Std III)
Time story (Std III)
Calendar (Std IV)
Division of three-digit numbers (Std IV)
Mathematically speaking (Std V)
What makes 100 % ? (Std V)
Weight Check (Std VI)
Ratio (Std VI)
Park Survey (Std VII)
Ratio Quiz (Std VII)
 Park Survey (Std VII) This activity can be given to the students when they are able to form and compare ratios Objectives To help students to form ratios compare ratios simplify ratios Instruction to the teachers Use the following information to conduct a discussion and reinforce the concept of ratio. The state government took a survey of the citizens of the Janatha colony to determine which facilities should be included in its new park. The results of the survey are tabulated. Write the table and ask children to answer the questions that follow.
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 Adults Teenagers Senior citizens Children 156 80 56 25 Yes No Yes No Yes No Yes No Play ground 79 77 40 40 14 42 20 5 Tennis court 92 64 36 44 19 37 7 18 Open air theatre 87 69 52 28 27 29 15 0 Health Club 80 76 60 20 18 38 10 15 Garden 76 80 23 57 42 14 5 20

Total population of the Janatha colony is 317.
Example: What is the ratio of adults who want to have a tennis court to adults who don’t want it?
Answer: The ratio is 92 : 64
92 : 64 = 23 : 16
Questions:
1. What is the ratio of teenagers who want to have a health club to teenagers who do not want it?
2. What is the ratio of teenagers who want to have a open air theatre to teenagers who do not want it?
3. What is the ratio of children who want an open air theatre to those who do not want it?
4. When you compare answers to questions 1 and 2, who do you think is more interested in having an open air theatre?
5. What is the ratio of children who want a garden to those who do not want it?
6. What is the ratio of the senior citizens who want a garden to those who do not want it?
7. When you compare the answers to questions 5 and 6, who do you think is more interested in having a garden?

• The teacher can come up with many more such questions.