A mini math lesson can easily be created with the cereal mix.  

Skip counting: Two, three or four of each cereal placed in a group. Practice skip counting touching the piles as you count.

Addition:  Grab any of two kinds of cereal (three for three addends), separate into piles. Count the amount in each pile and write on paper or whiteboard in a number sentence or equation (Example: 6+7=).  Count the total to get the answer.

Subtraction: Count the total amount of cereal and eat three (whatever number you want) then ask how many are left.  Write the equation out or if child is older have them write.

Division and multiplication:  Start with a number of cereal such as 15.  Have the child separate into equal groups, so they could make three groups of five, five groups of three or even one group of 15 or 15 groups of one.   For younger children guide them with the amount of groups.  You could say, “How can you make three even groups with your cereal?”  You can even draw three circles on paper to make it easy for them to divide.   Multiply or skip count once they are separated to show the relationship with multiplication and division.

What you need:

one egg, glass, vinegar

Put egg in glass, pour vinegar over egg, wait several days .  Take egg out and feel shell.

The vinegar dissolves the calcium in the shell making it soft and rubbery. Note that this shows the importance of calcium to make the shell strong, just like our bones need calcium.

To extend this activity, ask questions, list foods with calcium, eat foods with calcium, write out the hypothesis before the experiment, guessing what will happen and record the results at the end.