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making individual rock collectionspeoples should be encouraged to make their own collection of rocks small pasteboard or cigar boxes will serve to be
studying a single rockselect a single rock and try to learn as more as possible about it from careful observation if it is flat it is probably a
making a rock collectiona collection of the common rocks found in the community can be made by asking every pupil to bring in single piece of rock
explain the structure and functions of kidneyyou would have got a clear idea as to where the kidneys are situated yes the kidneys are located in the
studying life histories of insectscut large rectangular holes in the sides of a big cardboard container and cover them with muslin folded over at the
mounting boxes for insect collectionswood or cardboard cigar boxes make very useful and suitable housings for insect collections after the insect has
insect killing jarsecure a wide-mouth glass jar with a screw top or single which closes very tightly place a wad of cotton in the bottom and cover it
an insect collecting neta useful insect net can be made from a round stick such as a broom or mop handle some heavy wire and mosquito netting or
to observe yeast plantsborrow a microscope from a college a high school a doctor or a hospital place a some drops of the sugar solution which having
to study the gas produced when yeast acts on sugarplace some clear lime water in a test tube and have a pupil exhale by a soda straw placed in the
normal 0 false false false en-in x-none x-none microsoftinternetexplorer4
to test the effects of temperature on the activity of yeastmake up a quantity of bread dough stir a yeast cake in water and methodically mix the
to show the effects of yeast on doughmix together some sugar water and flour in the proportions to make good bread dough divide the dough into two
do moulds grow better where it is dark or lightthis time leave one culture dish in a warm place where it receives light all the time place the other
do moulds grow better where it is warm or coldthis time put single culture dish in a warm dark place and the other in a cold dark place study the
do moulds need water for growthplace a spoonful of dry cereal like as rice or oatmeal in a sterile culture dish place a like amount of the similar
the structure of mouldswhen the four pure cultures of mould have reached a vigorous state of growth study each one with a hand lens see if you can
how to culture mould plantsuse either sterile dishes with potato slices or gelatin as those ready for the experiments on bacteria transfer mould from
observing where soil bacteria livedig up a clover alfalfa or soy-bean plant carefully increase all the soil from the roots and see if you can find
do disinfectants kill bacteriasecure various types of commercial and house- hold disinfectants inoculate as more culture dishes as you have samples
does sunlight kill bacteriainoculate two sterile bacteria dishes from a dish where bacteria are growing place single dish in the open sunlight and
where may bacteria be foundexpose sterile bacteria dishes to as lots of the following conditions as you can label the dishes and set them away in a
to study if bacteria grow better where it is dark or lightinoculate two sterile dishes as before label one dark and the other light place the 1st
to study if bacteria grow better where it is warm or coldagain inoculate two sterile dishes label one warm and the other cold place the 1st dish
to study whether bacteria grow best where it is moist or dryuse 2 sterile dishes inoculate each one by touching a sterile transmit needle to a