My 7-year-old is taking an acting class. The homework this week is to tell a story, without using words. As a writer, this is a completely foreign thing for me. But, without batting an eye the child acted out picking a flower and presenting it to me. Hmmm.
We can tell a story - and that's nice. Or we can show a story to our readers through our words. Showing your reader the story invites them to watch a movie in their minds. The reader can see, hear, and feel what your character is feeling.
Use descriptive words that put the reader firmly in the time and place.
1. I ate cold pizza out of the fridge.
2. My stomach growled as I opened the fridge. Of course, the pizza! The cheese had coagulated, but it looked edible. Maybe. I grabbed a slice and took a bite. Not bad, if you don't mind congealed pepperoni.
Not the best example, but you get the idea (hey, I'm still perfecting it too). Number 2, showing the action rather than just telling what happened, clearly puts the reader in the mindset of the character.
Of course you have to use words. Feel free to share your own examples!