Alphabet Lowercase PebblesChildren benefit from using resources that appeal to their natural desire to explore, investigate, sort, and collect. These pebbles are the ideal tool for building an interest in letters and sounds in a wide variety of contexts, including sand, water, and discovery play. Sets come in storage container with teacher's guide. Each pebble is engraved with a lowercase letter and measures between 3 cm 4 cm (1" 1. 5"). Ages 3+.