Here are a few pictures of my favorite activities from Melissa Freshwater's unit Frog Math and Literacy Fun. This unit has tons of great activities you can use in centers or for kids to work in partners on, so even if you do not teach a unit on frogs or think you do not need it until next spring, you should check it out on TPT because you could easily use all of the activities in math and literacy centers.
Student's match the colored frogs. Then they record the numbers and decide which is greater.
This activity would be great for a build a sentence center. Students choose a word wall card. Then they write a sentence using the word wall word on the card as well as the picture.
For this activity, students work on spelling four letter words.
This activity allows students to have a little stamping fun while they work on hearing the middle sound in words.