Learn French: Chacun a une bonne idée pour le nouvel atelier. - Each one has a good idea for the new workshop.

Chacun means each one and stands alone as a pronoun, acting as the subject of the sentence here. Chaque is an adjective meaning each and must be followed by a noun, like chaque personne for each person.

Is chacun always followed by a singular verb, like a in this sentence?

Yes! Even though chacun refers to everyone in a group, grammatically it acts as a singular subject. Therefore, it always takes a third-person singular verb, just like il or elle.

Why is the word for new written as nouvel instead of nouveau?

Atelier is a masculine singular noun, so you would normally expect nouveau. However, because atelier starts with a vowel, nouveau changes to nouvel to make it flow better when spoken. This same rule applies to beau (which becomes bel) and vieux (which becomes vieil).

Why does bonne come before idée? Don't French adjectives usually go after the noun?