Introduction to symbolic answers, part b, enter the expression 2cos2(θ)−1, where θ is the lowercase greek letter theta.

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.