The presentations contains 20 SLIDES: Definition of percentage. Where do you see percentage? Converting Percentages into fractions, decimals and ratios. Converting fraction to percentage. Converting decimals to percentage. Converting ratios to percentage. Applications on percentages. Percentage For comparison. To find a given percentage of a given quantity. To express a quantity as a percentage of another. To find the whole using a given percentage. Increase or decrease as percent.

The presentation contains 15 SLIDES: Definition of Simple interest. Vocabulary on different terms used in simple interest e.g. time, principal. Formula of simple interest. Formula of Amount. Explanation of rate of interest with an example. Real life problems of finding different parameters of the formula.

The presentation contains 19 SLIDES: Learning Objectives. Definition of a Histogram. Parts of a histogram. Difference Between bar graph and histogram. Types of intervals. Tips for construction of bar graph. Steps to construct bar graph with an example. Read and Interpret a histogram.

The presentation contains 20 slides: Real life application. Mathematician behind the Cartesian system . Ordered pair with examples. Coordinate Planes. Quadrants. The signs of each of the Quadrant with examples. Way of locating points on a graph paper.

The presentation contains 22 SLIDES: Definition of symmetry. Line of symmetry. Symmetric figures. Horizontal symmetry with examples Vertical symmetry with examples Diagonal symmetry with examples Figures having two lines of symmetry with examples. Figures having multiple lines of symmetry with examples Translational symmetry with examples. Rotational symmetry with examples. Reflection symmetry with examples. Glide symmetry with examples.

The presentation contains 22 slides: What is Air pollution ? The types of air pollutants. Sources of air pollution. Natural Sources. Human Sources. Effects of air pollution on humans. Smog. Effects of Smog. Chlorofluorocarbons. Sources of chlorofluorocarbons. Ozone Layer. Hole in the ozone layer. Effects of Ozone depletion. Acid Rain. Marble Cancer. Greenhouse Effect. Consequences of Global warming.

The presentation contains 19 SLIDES: Statistics. Fundamental Characteristics of Data. Raw data. Types of Data. Data Handling Cycle. Data Tabulation/ Recording of data . Array with example. Organisation of data. Types of statistical data. Tables e.g. Tally chart / Frequency Distribution Table. Pictures e.g. Pictogram. Graphs e.g. Bar graph, Pie chart, Line graph, Diagrams e.g. Tree diagram, Venn diagram, Mapping or Arrow diagram. Using ICT in data handling.

The presentation contains 22 SLIDES: Learning Objectives. Definition of a tally mark. Uses of tally mark. How to count a tally mark. Tally Mark Chart. Construction of a tally mark table with an example. Application on real life problems on tally mark. Read and Interpret a tally mark table.

The presentation contains 21 SLIDES: Constructing the formula for area of a triangle. Altitudes ( height) of a triangle. Finding the area of the triangle. Finding the height of the triangle. Finding the base of the triangle. Formula for area of an right angled triangle and its example. Formula for area of an isosceles right angled triangle and its example. Application on area of triangle.

The presentation contains 20 SLIDES: Learning objectives. Definition of a line graph. Parts of a line graph. Tips for construction of line graph. Steps to construct line graph with an example. Reading and Interpreting a line graph. Advantage of line graph.

The presentation contains 20 SLIDES: Learning Objectives. Definition of a Pie Chart. Tips for construction of pie chart. Steps to construct a pie chart with an example. Scaling and drawing a pie chart. Read and Interpret a pie chart.

The presentation contains 20 SLIDES: Definition of fiber and its types. Natural fibers with example. Synthetic fibers with examples. Types of synthetic fibers. Rayon with example. Nylon with example. Polyester with example. Acrylic with example. Characteristics of synthetic fibers. Plastic. Characteristics of plastic. Thermoplastic with examples. Thermosetting plastics with examples. Properties and uses of plastics. Plastics are non –reactive. Plastic is light, strong and durable. Plastics are poor conductors. Problems with the use of plastics. Environmental friendly steps.

The presentation contains 22 SLIDES: Learning Objectives. Definition of a double bar graph. Parts of a double bar graph. Difference between bar graph and double bar graph. Tips for construction of double bar graph. Steps to construct double bar graph with an example. To read and interpret the double bar graph.

The presentation contains 20 SLIDES: Definition of mangrove. Geographical Regions. Geographical distribution of mangroves in India . Types of mangroves. Black mangrove with examples. Red mangrove with examples. White mangrove with examples. Mangrove functions. Mangrove uses. Mangrove threats. Mangrove restoration.

The presentation contains 20 SLIDES: Definition of variation. Types of variation. Direct variation with example. Inverse or indirect variation with example.

The presentation contains 20 SLIDES: Central Tendency. Importance of Central Tendency. Types of measures of central tendency. Mean and its examples. Range and its examples. Median and its examples. Mode and its examples.