CBSE ADDA

Link to science Lab Activity Maths Lab Activity List Activity : Sum of first n odd natural numbers (1) Activity Area of a parallelogram by paper cutting and pasting. (1) Activity Comparing CSA TSA and volumes of two Right Circular Cylinders (1) Activity Medians of a triangle concur (1) Activity To check whether a sequence is an A.P. or not (1) Activity Visualizing formula for area of a circle (1) Activity- Angle sum property (1) Activity- Area of a circle (1) Activity- Finding missing unit cubes (1) Activity- Getting angle bisector (1) Activity- Making square root spiral (2) Activity- Parallelogram by paper folding (1) Activity- sum of exterior angles of a polygon (1) Activity- sum of exterior angles of a triangle (2) Activity- Sum of first n natural numbers (1) Activity- Talk about Math shapes (1) Activity- To represent a quadratic polynomial geometrically (2) Activity- Triangle inequality (1) Activity- Verify Pythagoras theorem

Basic Guidelines for Excellence in Laboratory practices in SCIENCE (Class IX) For Laboratory Assistants EXPERIMENT No- 1-AIM- To verify the laws of reflection of sound EXPERIMENT No- 2-AIM- To determine the density of solid (denser than water) by using a spring balance and a measuring cylinder. EXPERIMENT No- 3-AIM- To establish the relation between the loss in weight of a solid when fully immersed in (a) tap water (b) strongly salty water, with the weight of water displaced by it by taking at least two different solids. EXPERIMENT No- 4-AIM- To observe and compare the pressure exerted by a solid iron cuboid on fine  and/ wheat flour while resting on its three different faces and to calculate the pressure exerted in the three different cases EXPERIMENT No- 5-AIM- To determine the velocity of a pulse propagated through a stretched string/slinky. EXPERIMENT No- 6-AIM- To study the characteristic of spirogyra/Agaricus, Moss/Fern, Pinus (either with male or female

1. To study the following properties of acetic acid (ethanoic acid) : i) odour ii) solubility in water iii) effect on litmus iv) reaction with sodium bicarbonate 2. To study saponification reaction for preparation of soap. 3. To study the comparative cleaning capacity of a sample of soap in soft and hard water. 4. To determine the focal length of i. Concave mirror and ii. Convex lens by obtaining the image of a distant object. 5. To trace the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measure the angle of incidence, angle of refraction, angle of emergence and interpret the result. 6. To study (a) binary fission in Amoeba and (b) budding in yeast with the help of prepared slides. 7. To trace the path of the rays of light through a glass prism. 8. To draw the images of an object formed by a convex lens when placed at various positions. 9. To study homology and analogy with the help

Class IX 1st.  Term Science Syllabus April : Unit : Matter in our surroundings Unit : Matter –Is matter around us pure Unit:  Improvement in Food Resources May: Unit : The fundamental unit of life Unit : Tissues July: Unit : Motion Unit : Force and laws of motion August: Unit : Gravitation September : Revision of the I term Syllabus and I term examinations PRACTICALS Class IX 1st.  Term Science Practical are to be conducted alongside the concepts taught in theory classes. List of Experiments 1. To test (a) the presence of starch in the given food sample (b) the presence of the adulterant metanil yellow in dal. 2. To prepare a) a true solution of common salt, sugar and alum b) a suspension of soil, chalk powder and fine sand in water c) a colloidal of starch in water and egg albumin in water