Toys made of plastic are more pleasant to touch than toys made of wood and cloth.

____ age refers to a child’s skill and growth level.

Hot metal playground equipment can cause burns on young children.

The recommended indoor space usually varies between 20 and 35 square feet of space per child.

For safety reasons, windows in the playroom should be high enough so only adults may see out of them.

The wheeled toy path should be adjacent to the ____.

Most preschool teachers prefer round tables.

True or false: A fresco is a painting medium where the colors are applied to a plaster ground, usually a wall (mural) or a ceiling.

Also known as polymer paints, this painting medium has pigments mixed with a synthetic plastic resin 

The following circuit operates if and only if there is a path of functional devices from left to right.  Assume devices fail independently and that the probability of each device correctly operating is as shown below.  What is the probability that the circuit does not operate?