face validity is to what extent people agree a recording superficially appears to measure. face validity assesses whether the test "looks valid" to the examinees who take it, the administrative personnel who decide on its use, and other technically untrained observers. Does the test "look like" a measure of the construct of interest? give an example.
if you prepare a test to measure whether students can perform multiplication, and the people you show it to all agree that it looks like a good test of multiplication ability, you have shown the face validity of your test.