This is a fun activity to utilize in order to practice the "ch" sound in all positions.
How I play: After laminating the necessary amount of bingo cards, I grab some bingo chips. Each time I call out a word from the bingo card, the players must correctly articulate the target sound (or just try their best). If the player is successful at the word level, I then instruct them to expand and use the word in a sentence. Once this is completed, they get to place a bingo chip over the space and move on to the next turn. *If an individual can not yet produce the target sound in words, have them just practice the target sound each turn.
I hope this is useful and I look forward to feedback.