In a colorful, engaging design interface, students can work through various levels of difficulty to create sentences or can challenge themselves with a series of increasingly difficult test sentences. Sentopiary was designed with the U.S. core curriculum standards in mind and aligns well with vocabulary and grammar objectives at each grade level.
The Sentopiary team told us the turning point for the classroom activity came when students started to create grammatically-correct, silly sentences along the lines of the example included in the app: "The intelligent penguins invaded the capital". In classroom activities, this led to students getting more engaged as they tried to create a silly example for themselves. It is an approach that seems to have ignited end users as well, with one review on the app store from a grandfather who said "my grand kids (K - 4) like the gentle, goofy fun of building silly sentences!"
A Vimeo video channel shows the app in use, while the Sentopiary website has more details on the alignment with English curriculum standards.