Word sliders are PERFECT to help your little ones with blending. These are blends and digraphs (I also have CVC). They use a letter-sized envelope and slide each letter out and say the sound. As they continue to pull out the word, they blend it together and then can do a self-check by looking at the picture. I've seen HUGE progress in my students who struggled with blending. These are PERFECT for guided reading or RtI time.
I also have a CVC pack that is PERFECT for RtI! My little guy that was struggling with blending, loves to whip these out and master them all!
Or you can buy them in a bundled pack for a discount! :)