Ages 3-4 Pre-Kindergarten Wooden Unit Blocks Booster Set for homes, home schooling, home-based childcare, or family unit block play with 55 blocks in 11 block shapes specifically designed to support construction, tactile learning, and dramatic play for children ages 2 and up.

As with all our wooden blocks, this set is infant- and toddler-safe, suitable for ages 6 months and up. They are completely free of borates, pesticides, and fungicides commonly added to rubberwood after harvest. We use only 100% Hard Rock Maple. We manufactured on demand in the United States from Custom Milled FSC®-Certified Hard Rock Maple. Each block is accurately cut to within half of 1/100 of an inch.

This 55-block set adds more of the smaller unit block shapes and specialty shapes (like arches, planks, and pillars) to support more complex building block contructions and micro-dramatic play.

How our Standard Unit Wooden Blocks grow with your child.

Purchase the CP01 Starter Unit Blocks Set any time before or after your child’s first birthday.

We make it easy and affordable to grow your Standard Unit Wooden Blocks set with these two options…

Start Your Unit Block Gift-Giving Tradition — Give Unit Blocks.

Option 1: Buy one set and then add 4 large Unit Block Booster Sets over the next 4+ Years.

As annual holiday OR birthday gifts.

• CP01 Age 1-2+ Infant Toddler Starter Unit Blocks Set — 45-Block Starter Set for Ages 0 to 1+
• CP02 Age 2-3+ Toddler Booster Unit Blocks Set — 55-Block Unit Blocks Booster Set for Ages 0 to 2+ (This Unit Block Set)
• CP03 Age 3-4+ Pre-K Booster Unit Blocks Set — 48-Block Unit Blocks Booster Set for Ages 0 to 3+
• CP04 Age 4-5+ Pre-K Booster Unit Blocks Set — 53-Block Unit Blocks Booster Set for Ages 0 to 4+
• CP05 Age 5-6+ K-1+ Booster Unit Blocks Set — 40-Block Unit Blocks Booster Set for Ages 0 to 5+

Option 2: Add 3 large and 4 small Unit Block Booster Sets over the next 3+ Years.

As semi-annual holiday and birthday gifts.

• CP01 Age 1-2+ Infant Toddler Starter Unit Blocks Set — 45-Block Starter Set for Ages 0 to 1+
• RX1 Unit Block Rx Set 1: Half Blocks (1/4 of our CP02 set)
• CP03 Age 2-3+ Toddler Booster Unit Blocks Set — 48-Block Unit Blocks Booster Set for Ages 0 to 2+
• RX2 Unit Block Rx Set 2: Arches & Triangles (1/4 of our CP02 set)
• CP04 Age 4-5+ Pre-K Booster Unit Blocks Set — 57-Block Unit Blocks Booster Set for Ages 0 to 4+
• RX3 Unit Block Rx Set 3: Columns & Pillars (1/4 of our CP02 set)
• CP05 Age 5-6+ K-1+ Booster Unit Blocks Set — 40-Block Unit Blocks Booster Set for Ages 0 to 5+
• RX4 Unit Block Rx Set 4: Roads & Planks (1/4 of our CP02 set)

Option 3: Start with a larger set and add 3 large Unit Block Booster Sets over the next 3+ Years.

If your child is a little older, you can start with an Introductory Family Set and still get create a meaningful annual holiday or birthday tradition.

• CP11 Introductory Family Unit Blocks Set — 96-Block Starter Set for Ages 0 to 3+
• CP02 Age 2-3+ Pre-K Booster Unit Blocks Set — 55-Block Unit Blocks Booster Set for Ages 0 to 3+ (This Unit Block Set)
• CP04 Age 4-5+ Pre-K Booster Unit Blocks Set — 57-Block Unit Blocks Booster Set for Ages 0 to 4+
• CP05 Age 5-6+ K-1 Booster Unit Blocks Set — 40-Block Unit Blocks Booster Set for Ages 0 to 5+

Option 4: Start with a larger set and add 2 large Unit Block Booster Sets over the next 2+ Years.

If your child is a little older, you can start with a CP31 Preschool Center Unit BLocks Set and still get create a meaningful annual holiday or birthday gift tradition.

• CP31 Preschool Center Unit Blocks Set — 191-Block Starter Set for Ages 0 to 5+
• CP02 Age 2-3+ Pre-K Booster Unit Blocks Set — 55-Block Unit Blocks Booster Set for Ages 0 to 3+ (This Unit Block Set)
• CP05 Age 5-6+ K-1 Booster Unit Blocks Set — 40-Block Unit Blocks Booster Set for Ages 0 to 5+

When you are done with any of the above purchase options, you’ll have a full CP61 Quarter Classroom Unit Blocks Set + RX10 Quarter Rx Unit Block Set.

The Hard Rock Maple Unit Blocks that you buy today become tomorrow’s heirlooms and antique wooden toys.

Compare Our Hard Rock Maple Unit Block Sets to other Unit Blocks Sets.

Our CP01 plus CP03 equals our own CP11 Introductory Family Unit Blocks Set (96 blocks, 16 shapes) made with FSC®-Certified Hard Maple. Compare these unit blocks sets to Community Playthings F151 Introductory Set (92 blocks, 16 shapes), which is now made from cheaper, grey-colored Soft Maple instead of true Hard Maple.

Our CP02 equals our own RX10 Quarter Classroom Rx Unit Blocks Set (55 blocks, 11 shapes). They are identical, both made with FSC®-Certified Hard Maple.

Our CP01 + CP03 + CP04 equals our own CP31 Preschool Center Unit Blocks Set (150 blocks, 20 shapes) made with FSC®-Certified Hard Maple. Compare these unit blocks sets to Community Playthings G431 Preschool Set (149 blocks, 20 shapes), which is now made from cheaper, grey-colored Soft Maple instead of true Hard Maple.

Our CP01 + CP03 + CP04 + CP05 equals our own CP61 Quarter Classroom Unit Blocks Set (190 blocks, 20 shapes) made with FSC®-Certified Hard Maple. Compare these unit blocks sets to Community Playthings G461 Quarter School Set (180 blocks, 20 shapes), which is now made from cheaper, grey-colored Soft Maple instead of true Hard Maple.