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Hi,    Here is the info I received, wear a mask and gloves, keep in home
from school that day, have the kids make the project at home , have him
go to another room, send in rice flour for everyone(someone said that it
wouldn't work with rice flour), one person said you would have to eat it
to do any harm.   I found out that the teacher mixes it at home and
brings it to school, so that is good.  Now all I have to do is find a
sub. for him to use.  Thanks to all for the suggestions.   Melinda