regular count nouns (See exercises at the bottom of the linked page.)
a little / a few (See exercises at the bottom of the linked page.)
review of count and noncount nouns with link to exercises - 1
review of count and noncount nouns with link to exercises - 2
Many exercise from Agendaweb.org To go to exercises, click on the yellow and pink initials in the grid. Warning: Not all of these links work, but many of the ones that do, are excellent.
plural nouns (-s, -es and other spelling) (See exercises at the bottom of the linked page.)
review spelling of +s plurals
irregular plurals 1(See exercises at the bottom of the linked page.)
count and noncount quantifiers (some, a little, a few, etc.)