One of my most ragged and well-used books is my little Latin and Greek root dictionary. My students (and my own children) have responded really well to the idea that if you learn basic Latin and Greek prefixes, suffixes, and root words, then you have a really good chance of working out what any big, fancy word you come across means. Lessons on Ancient Greece and Rome are the perfect time to introduce this idea, so this link provides a basic collection of word roots to get you started.
I love timelines. For some reason laying out information in a nice, linear fashion helps me keep all the times, places, people, and things we're supposed to remember straight in my head. Here is a timeline that shows students when major inventions of the ancient world were developed to help understand just how old some things really are.
Quick! Name the Seven Wonders of the Ancient World! Don't worry, I always miss a couple too. Here's a handy-dandy list with the usual high-quality photos and illustrations we expect from National Geographic.
Interactive components of a lesson are critical to help reinforce what's being taught, but this can be a bit challenging when teaching about the ancient world since we're so far removed from these fascinating cultures. Here is a simple game that was played in ancient times that may help students get a glimpse of what life was like on an ordinary day in ancient times.
Home schooler blogs are often great resources for traditional school teachers because they can inspire us to think of the same-old-same-old lessons in new and exciting ways. This blog post simply lists (with links) to the books that this home schooling family used to work through an ongoing lesson sequence about ancient history. Just about any specific lesson you might be looking for should have a companion book listed here, or help you on your way to finding a text that will be the perfect fit.
This page answers the question within the context of a college-level Western Civilizations course, but I feel like the discussion is valuable for primary and middle school teachers who are wanting to introduce the topic in their classroom as well. Understanding why studying ancient cultures is important in general will help inform and guide lesson planning even for the most rudimentary level lessons.
They say that the way to someone's heart is through their stomach, and it's true in a lot of ways. Food is a great way to truly understand any culture, so why not introduce food and drink from the ancient world to help students fully grasp what life was like back then?