Wear a Hat Day
I found this worksheet on A to Z teacher stuff. I modified it for my students who were still learning letter sounds. I asked them what the picture on the paper was, and they replied a hat. I then proceeded by asking them what rhymes with hat, most of my students said cat; therefore I only had them trace/write Hat & Cat.
Alphablocks reviewing "AT" Rhyming words
Cat in the hat whiskers
How tall is the cat in the hat- measuring activity
Cat in the hat Pattern blocks template
Cat on a shape booklet
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