Types of plastics. Let us take two bottles made up of plastic. One is Tupperware and another ordinary. Pour some hot water in both. What do you notice?

Hey friends I am sujatha from akkalaredypalle of kakapo district the woman in the picture is my mother she carries potable water for us from the stream which is 4 km away from our village it is very difficult to walk all the way by carrying the water pots it takes lot of time also but it is very essential for us as we can't do anything without water so we use water previously what do you think after listening to Sujata's story?

Let us do the following activity to understand the mendelian principles of heredity. Materaials required: a. 3cm length and 1 cm breadth chart pieces -4 b. 2 cm length and 1 cm breadth chart pieces -4 c. Red byuttons -4 d. white buttons -4 e. chart, scale, sketch pen penil, 2 bags. Method: Prepare a chart with 2x2 boxes along with numbe and symbol as shown in the figure. Game 1: Monohybrid cross (starting with hybrid parents) To start with take 1,2 or 3,4 . In case you start 1,2 pik all the 16 log and short pieces and prepare such paris in each of which you have a long and short piece. Take 4 pairs each of long and short strips and put them in two separate bags. Now each bag contains 8 strips (4 long and 4short). One bag say 'A' represents mael and the bag 'B' represents female . Now rendomly pick one strip each from bag A and B and put them together in the 1 on the chart. Keep picking out the strips and arrange them in the same manner till your bags are empty. Same time your boxes in the chart are filled with paris of strips. you might have got the following combinations, two long strips, one long and one short strip, two short strips. (Q) E. What can you coclude from this game?

Think of your own family, what similarities do you share with your father and mother? Draw a table to represent the similarities of some characters like colour of eye (cornea), colour of hair, shape of nose, shape of face, type of earlobe (attached or free) inner thumb markings, etc. Write your characters in one column and that of your parents in the other columns. (Q) Is there any character in you, similar only to that of your grandma?

Take some water in a test tube and add concentrated H_2SO_4 to it. Shake the test tube well. If you touch the bottom of the test tube, you feel it as hot. Now, instead of H_2SO_ 4 , if you add NaOH pellets to water in another test tube and touch the bottom, what do you observe?

Take some water in a wide mouthed bowl. Put an iron nail in it. What do you observe ? Put an empty iron tin in that bowl. What do you observe ?Also try to observe whether a wooden piece floats on water. What happens when a wooden bowl is dipped in water ? what is your conclusion from the above activity?

Take two similar green leaves . Apply grease on one leaf and leave the other free. Add 1 or 2 drops of acid on each leaf . What kind of change do you observe from this ?

Take two paper cups.Fill them with fertile soil.sow two or three bean seeds in a cup and few finger millets in another cup.Sprinkle water over them.then place them by the window.After a couple of days you will see them sprout observe the newly emerging leaves. What kind of root system do you find in the bean plant?

Take two paper cups.Fill them with fertile soil.sow two or three bean seeds in a cup and few finger millets in another cup.Sprinkle water over them.then place them by the window.After a couple of days you will see them sprout observe the newly emerging leaves. What kind of root system do you find in the millet plant?

Think of your own family, what similarities do you share with your father and mother? Draw a table to represent the similarities of some characters like colour of eye (cornea), colour of hair, shape of nose, shape of face, type of earlobe (attached or free) inner thumb markings, etc. Write your characters in one column and that of your parents in the other columns. (Q) How do you think these characters may have been inherited by you from grandma