This rainbow alphabet sensory bin makes learning letters feel like a treasure hunt. Kids dig through bright chickpeas to find letter rocks and match them.
It builds letter recognition and fine motor skills, and everything is reusable for the next round.
How to Make a Rainbow Alphabet Sensory Bin
Alphabet Letters A to Z Worksheets
Get the printable26 smooth river rocks
White paint pen
An alphabet mat or letter chart (laminated)
Sensory bin and scoops or tongs
Dye the chickpeas
Make a batch of rainbow chickpeas and let them dry.
Letter the rocks
Write A to Z on the rocks with a white paint pen and let them dry.
Prep the mat
Laminate the alphabet mat or slide it into a sheet protector.
Fill the bin
Pour in the chickpeas and bury the rocks.
Dig and match
Kids dig out each rock and place it on its matching letter.
Safety note
Chickpeas and small rocks are choking hazards. This bin is for kids past the mouthing stage, with an adult nearby.
Ways to Play
- Ask questions: “What letter is that? What sound does it make?”
- Write it: After matching, trace or write each letter.
- Younger kids: Highlight letters for them to trace.
- Store it all in a bin to play again.
More letter activities
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Practice every letter with our animal ABC chart and flash cards.
The worksheets include
- Letter practice pages for A to Z
- Instant PDF download, nothing is shipped
Perfect for
- Preschool and kindergarten
- Literacy centers
- Letter of the week
Alphabet Sensory Bin FAQ
Fill a bin with a filler like dyed chickpeas, hide letter rocks or tiles and have kids match them to an alphabet mat.
Letter beads, foam letters or magnetic letters.
About 3 to 5, once kids don’t mouth small objects.
Letter recognition, letter sounds and fine motor skills.
More Letter Activities
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From families like yours
Did you try it? Tell us how it went!
We love seeing these activities out in the wild: the lumpy letters, the snack breaks, the proud “I made a B!” moments. Leave a star rating, tell other parents what worked (and what totally didn’t), and add a photo of your setup if you’d like.
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