Measurement Inquiry - For CAP classrooms, this could double in the discovery center with a graph (children put their name under the color they think has the most)-- Use non-breakable PLASTIC jars and hot glue the lids on.
Come see how I do my estimation station and find lots more ideas for the day of school in a kindergarten or first grade classroom. This post includes both math and literacy activities for this fun day. You can grab a FREEBIE too!
estimation jar: teachers starts week after back to school night (teacher can mention it). whoever guesses correctly or closest to choses their item first on friday and brings the jar back on monday with a new item. letter home required.