It is the time between learning sessions that the seed grows. What this means is that it's the ten minutes of focused teaching you spend in the morning and the five minutes you spend an hour later that will really make a difference in your child's language development. Learning should be like any game: Challenging enough to make it interesting, easy enough to win 60-80% of the time.
Speech-language pathologist "Miss Shelley" teaches parents how to turn their children's use of YouTube into a brief, linguistically meaningful, interactive parent-child exchange:
https://www.youtube.com/watch?v=K-RnlAm7gQM&t=23s
Have your child find objects that match the colors in a rainbow and arrange them in a rainbow shape. It's a scavenger hunt, and your child can match objects to color names this way.
Language isn't words and sounds alone. The musical aspect of language, known as "prosody," involves rhythm and melody. Boom Chicka Boom has a good rhythm and a fun "call and answer" bridge:
https://www.youtube-nocookie.com/embed/1b6axyuaKcY
"If your child has a toy bus, this is a good time to play with it. Find three empty boxes. Pretend they are a house, a school and a store. Who is on the bus? Where is the bus going? Who is getting on and who is getting off? Are any animals on the bus, or just people? You can also do this with other vehicles."
https://www.youtube.com/watch?v=GzrjwOQpAl0
Mommy Speech Therapy has tons of free materials for parents to use at home. No need to print. Just open the PDF on your computer, phone, or tablet, and use the words on the screen.