Word Rumble can be a fun way to practice spelling and build fluency in writing. In class, children use a whiteboard and whiteboard pen but they can use any writing materials (and I mean any - get creative!).
If you're working together, you can facilitate by showing each slide for 5-10 seconds while the children write. At first you might allow longer, eventually you can see how quickly they can write the words. At each slide, the child should say the word, then write the word, saying the word as they write it.
Alternatively, it could be an independent activity. The children move to the next slide when they have finished writing the word.