NOTE this may be a sensitive issue for some children KS2 Children could design

# Note this may be a sensitive issue for some children

• Lab Report
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NOTE : this may be a sensitive issue for some children). (KS2) Children could design their own leaflet or poster. (KS2) Numeracy and information and communication technology (ICT) links Activities related to numeracy objectives Objectives rele van t to NC yea r Draw a circle of 10cm diameter to represent a fungus cell. Now look in books to find relative sizes of other microbes and draw circles with different diameters to show the relative sizes – add drawings of each type of microbe to the paper circles and make a display. Enter figures into a spreadsheet ( see below* ) or use a calculator to double a number over and over again to model the increase in a population of bacteria (assume one bacterium splits into two every 30 minutes). How many will there be in an hour, after 6 hours, 12 hours, 24 hours? Draw a graph of the results of the calculation above. This should be a line graph – help children with scale – you may only be able to graph a few hours! Y4/5 Y5/6 Y6 Information and Communication Technology Links Relating to QCA unit: *Enter figures for bacterial growth into a spreadsheet and add a formula that will automatically calculate the next entry for a time 30 minutes later as a doubling of the previous figure . Use the computer to generate a line graph showing the results. Use a computer to design a leaflet e.g. using microsoft publisher that gives information about vaccination e.g. against tetanus … include design to show hat might happen to you if you got ‘lockjaw’. 6B 4D, 5C - - 68
Copiable worksheet 8.1 : Lower juniors Yeast balloons Put some water into 5 soda-pop bottles. Add different things to each one as shown below. Shake the bottles to mix them up. When you have finished put a different coloured balloon over the top of each bottle Insert drawings 8.5 Put yeast and sugar in this one. Keep it in a warm place Put yeast and sugar in this one Put it in a cold place. Put only yeast in this one – NO SUGAR! Keep it in a warm place Put yeast and sugar in this one Give it to your teacher to boil the mixture Put only sugar in this one – NO YEAST. Keep it in a warm place Leave your experiment for about an hour and then record what you see in this table Balloon colour What the bottle contained What has happened? What can you see inside the bottle? What happened to some of the balloons? Why did some balloons get bigger than others Could it be the yeast that has done this or the sugar ? How can you tell from your results? - - 69
What might be made by the yeast that could make the balloons get bigger? Why didn’t the yeast work when it had been boiled? C opiable worksheet 8.2 : Upper juniors Let’s make a super radish Gardeners often hold competitions to see who can grow the biggest leek, onion and so on. Some people say that they grow huge vegetables by giving their plants lots of fertiliser.