One of my significant takeaways from PD with Jo Knox was how she co-constructed the WALT with the children at the end of the lesson. The WALT was written in language the children used and could understand.
I have since done this with my maths groups and it is working a treat and has a number of benefits. By co-constructing the WALT the children are reflecting on their learning straight after the lesson and it has helped them cement the lesson content.
I have also seen higher levels of engagement when co-constructing the WALT. By not letting the cat out of the bag at the start of the lesson there is an element of the unknown. This unknown creates a level of curiosity within the children which leads to greater engagement.
Finally, it has empowered the children and given them greater agency over their learning which can only be a good thing right?
If you haven't done this with your class you should give it a whirl. At the very least it's nice to mix things up a bit for both you and your kids.