One of the most popular science curriculums on the market, Apologia has colorful and bright pages that kids will love. The upper grades are written in an easy to understand style, which comes in handy when learning subjects such as Chemistry or Biology. Dr. Wile (the author), takes special care in writing the curriculum for homeschooling students.
1 Tap is used in the British Isles and most of the Commonwealth for any everyday type of valve, particularly the fittings that control water supply to bathtubs and sinks.
Definition of tap. 1  1a : a plug for a hole (as in a cask) : spigotb : a device consisting of a spout and valve attached to the end of a pipe to control the flow of a fluid : faucet. 2  2a : a liquor drawn through a tapb : the procedure of removing fluid (as from a body cavity) 3  3 : wiretap. 4  4 : a tool for forming an internal screw thread.