A truth table lists every way the inputs can be, and the answer for each.
A truth table lists every way the inputs can be, and the answer for each one.
Each switch is off or on, so each extra switch doubles the number of rows.
An AND lamp lights only when both switches are on. An OR lamp lights when either one is on.
Checking every row is how you catch a bug that likes to hide.
These are some of the questions on the sets. The printable sheets have more and an answer key.
16. 2, 4, 8, 16: each switch doubles the rows.
No. AND needs both switches on.
Yes. OR lights when either switch is on.
No. With both switches off, neither lamp lights.
False. Three switches have eight rows. Two have only four.
With a grown-up, pick a rule with two parts, like: I can watch a show if my homework is done and my chores are done. Draw all four rows of the table on paper, and mark each row yes or no.
Pick a rule with two parts, like: I can watch a show if my homework is done and my chores are done. Draw all four rows of the table on paper together and mark each row yes or no.
