on web orders over $99 - click for details

Receive FREE SHIPPING on orders over $99 placed on the Didax website and shipped within the contiguous US. No promo code is required to receive this offer.

The order total for free shipping is calculated after any discounts are applied. Orders containing Eureka Math Kits DO NOT qualify for free shipping.

Free shipping valid ONLY on orders placed on the Didax website shipped within the contiguous US. Our regular shipping policies applies to other orders.


You have no items in your shopping cart.

Product was successfully added to your shopping cart.

Tri-Blocks Phonics Tub

  • Availability: In stock
  • Item #: 510175W
  • Grades: 1-3
Build words with Phonics Tri-Blocks and learn short vowels, long vowels, digraphs, suffixes, and more. Turn each Tri-Block and manipulate the middle sound (CVC or CVVC), change a blend (sp to sl or st), or change a spelling (y to i) when adding a suffix.

Set contains 90 color-coded blocks and teaching guide.

Grades 1–3.
WARNING: CHOKING HAZARD--Small parts Not for children under 3 yrs.