Cornell University
Study Soil
What's in soil? Young scientists study the pH levels of soil from their school yard. They observe the land and area the soil came from to decide if location has anything to do with acidity level.
Curated OER
Photo Fun
In this phonics practice learning exercise, learners 6 words that are missing letters and fill in the blanks with ph or gh to appropriately complete the words. Picture clues are provided.