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## Latest revision as of 10:30, 30 October 2019

Philosophy of Mathematics |

While creating a resource page, please click here for a resource creation **checklist**.

## Contents

# Concept Map

# Textbook

Karnataka state textbook- Chapter 4: Commercial Arithmetic

# Additional Information

This videos is related to ratio and proportion and also profit and loss percentage

## Useful websites

- To see the best videos on ratio and proportion click here
- To get the information about simple interest click here
- This TESS- India link to a unit on Proportional reasoning attempts to explore ways to teach proportional reasoning, including inverse and direct proportion in a creative way.

## Reference Books

NCERT textbook_Class 8-Chapter 8:Comparing quantities

National Institute of Open Schooling (NIOS)-Module 2 Commercial Mathematics:Percentage and its applications

# Teaching Outlines

## Concept #

### Learning objectives

### Notes for teachers

*These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.*

### Activity No #

**Estimated Time****Materials/ Resources needed****Prerequisites/Instructions, if any****Multimedia resources****Website interactives/ links/ Geogebra Applets****Process (How to do the activity)****Developmental Questions (What discussion questions)****Evaluation (Questions for assessment of the child)****Question Corner**

### Activity No #

**Estimated Time****Materials/ Resources needed****Prerequisites/Instructions, if any****Multimedia resources****Website interactives/ links/ Geogebra Applets****Process (How to do the activity)****Developmental Questions (What discussion questions)****Evaluation (Questions for assessment of the child)****Question Corner**

## Concept #

### Learning objectives

### Notes for teachers

*These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.*

### Activity No #

**Estimated Time****Materials/ Resources needed****Prerequisites/Instructions, if any****Multimedia resources****Website interactives/ links/ Geogebra Applets****Process (How to do the activity)****Developmental Questions (What discussion questions)****Evaluation (Questions for assessment of the child)****Question Corner**

### Activity No #

**Estimated Time****Materials/ Resources needed****Prerequisites/Instructions, if any****Multimedia resources****Website interactives/ links/ Geogebra Applets****Process (How to do the activity)****Developmental Questions (What discussion questions)****Evaluation (Questions for assessment of the child)****Question Corner**

# Hints for difficult problems

# Project Ideas

- This website suggests some interesting activities such as 'raising funds for a cause', 'tracking spendings and earnings for a time period' and 'business' that could be used while teaching profit and loss. Click here
- Using a list of prices for food and clothing, which appear in advertisement leaflets/ pamphlets, students will practice math skills related to sales tax, discounts, percentages etc. Click here

# Math Fun

**Usage**

Create a new page and type {{subst:Math-Content}} to use this template