Blocks shapes names

Introduction to Block Building with Children

I was incredibly lucky to not only receive my Masters in Education from a graduate school (Bank Street) that understands the importance of block building as an integral part of the social studies curriculum, but also train at the school (City and Country) that was founded by Caroline Pratt who invented the unit blocks we use today.  In the early 1900s Pratt understood the importance of open-ended materials as the center of a child’s education.  Pratt developed the unit blocks for use at City and Country School but never marketed them under her name and therefore you will find unit blocks through a variety of companies, but the basic ideals remain the same.  This post will serve as an Introduction to Block Building with Children  including the areas of development block building supports, the basic shapes,  the stages of block building, the ideal environment for block building, managing a block building environment and accessories that will aid the block building experience.

This post contains affiliate links for your convenience. 

CLICK HERE TO PURCHASE WOODEN UNIT BLOCK

AREAS OF DEVELOPMENT ENHANCED BY BLOCKING BUILDING WITH CHILDREN

I’ll admit it when I entered graduate school I had no idea about block building.  I signed up for the Block Building Class completely confused as to how a class on the graduate school level was about building blocks.  I mean, don’t you just build blocks?  By the end of the first class I was humbled about the complexities of early childhood education and specifically how beneficial block building is to a child’s education.  The use of blocks in your classroom or home promotes all aspects of a child’s development.

shape recognition
symmetry
measurement
counting
1-to-1 correspondence
fractions
size

sharing ideas
naming buildings
creating stories
creating signs
labeling

mapping
symbolic representation

balance
experimentation
inclined ramps
stability
gravity

gross motor development
hand-eye coordination

sharing
patience
cooperation
pride of ones work
respecting peer’s work

THE BLOCK SHAPES

The specific shapes, lengths, widths and heights of the wooden blocks are crucial to the success of the block building experience.  Pratt designed the unit blocks in an incredibly thoughtful manner through years of experimentation and direct observation in the early 1900s.  A basic block set begins with the unit block and then expands with blocks two and four times as long but with the same width and thickness, cylinders, curves and half units.

BLOCK BUILDING HELPS CHILDREN EXPLORE FRACTIONS

All blocks except for the cylinders and curves can be created from the unit block via multiplication or division.

While the small square block is generally considered the half unit it is interesting to note that some of the other blocks can be placed together two create one unit block.  This is such a genius way of teaching fractions.

THE STAGES OF BLOCK BUILDING WITH CHILDREN

Repetition is the key to a successful education.  Children need time, space and security to explore materials without any end product in mind.  You can begin to introduce block building as soon children are capable of picking up the smaller blocks.

Stage 1
Children will carry blocks from one place to another without any real thought of building.

Stage 2
Stacking blocks in rows or small irregular towers.

Stage 3
Bridging is used.  Two blocks are used with a space in between and another block connecting at the top.

Stage 4
Enclosures are created.  This became a favorite part of my children’s block building  after we visited the zoo.

Stage 5
Increased use of blocks, height, pattern and balance.

Stage 6
Dramatic play begins to appear.  Children begin to name structures.

Stage 7
Building structures that represent everyday life.

THE BLOCK BUILDING ENVIRONMENT

Ideally a block building area should have a great deal of space.  Hardwood floors are easier to build on than a rug. Yes, it does make a bit of noise if the blocks fall, but play spaces and classrooms were not meant to be quite places.

HOW TO STORE UNIT BLOCKS

How you store the wooden blocks is also part of the learning process.  A large shelving unit like the one above is very useful.  Look for one that has separate compartments.  This will make the sorting process easier.  Click here to purchase a similar block shelf. . Blocks are sorted by type.  You can trace the shapes on colored contact paper (sticky back paper) and attach to your shelf.  This will help the children become independent during block clean up.  It is also a natural way to explore shape recognition and sorting skills.

THE CLEAN UP PROCESS

Almost everyday we have intricate block building structures that leave no blocks left on the shelves.  The clean up process can be overwhelming to children when they look at how many blocks need to be sorted back on the shelves.  Cleaning up needs to be part of the learning process and consistently practiced.  Teach children to start from the top of their structures and work their way down to the bottom of block structures.  Blocks are not to be crashed into.  This is overwhelming and does not show respect for the materials.  Do not assume that children understand that blocks should be sorted according to the labels.  This is a teachable moment.  Gather your children or students and model how to clean up.  “I have a triangle block.  Hmm, where does it go?  I need to find the red triangle shape!  Here it is!  The triangle block goes behind the red triangle shape.”  Have children come up and try to do the same with another block.

Do you have reluctant cleaners?  Make it a game!  Draw pictures of the block shapes on pieces of heavy paper and keep in a basket.  At cleanup time have each child choose a shape.  The child is responsible for cleaning up just that shape.  This helps make the process less overwhelming.  Want to practice counting and 1-to-1 correspondence?  Have a basket full of numbers.  Children pick a number and need to clean up the corresponding number of blocks.

The clean up process is a great opportunity to point out how working cooperatively as a team makes the cleaning easier and more fun!

BLOCK BUILDING ACCESSORIES

In the early stages of block building we focus solely on the wooden blocks.  As children become more adapt at building and add dramatic play to the block building process I add a few accessories.  Accessories are a great way to tie in a unit of study or a recent experiential trip.  After our first beach vacation we added a basket of shells and some blue fabric.  When studying our backyard bugs I placed a basket of pretend bugs.  The children loved making little homes for our creatures.  Here is a list of some of our favorite accessories.   Please keep in mind to limit the amount of accessories as the focus should be on the block building

colored cube blocks
colored glass stones
shells
wooden people
animals
tree blocks
small pieces of fabric
small sheets of tin foil
toy cars
small pieces of paper (index cards) and markers to make signs and labels

Interested in creating your own block center?  Start by purchasing good quality wooden unit blocks.

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You may also enjoy our posts on an Introduction to Painting.

Types of Concrete Blocks Used in Construction

There are two primary concrete block categories: hollow and solid. Both of these concrete block types are typically used during the construction of walls, but can be used for other purposes as well.

Not all solid concrete blocks are fully solid, as you’ll see, but they’re more solid than hollow blocks are. We’ll discuss the different types of concrete blocks — also known as concrete masonry units or CMU — in more detail below.

You’re probably familiar with concrete blocks from your local hardware store, where you may have heard some of them called cinder blocks. This is because cinder blocks were originally made in part from cinders that were left over when coal was burned (often at coal-fired plants). The cinders were used as a substitute for sand and gravel in concrete, with the result being lighter and less durable cinder blocks.

The terms “concrete” and “cement” are also often confused. Cement is an ingredient used to make concrete. Other materials, such as sand, gravel, and stone, constitute about three-quarters of what you find in concrete. Cement — a powder formed of clay, limestone, and other substances — is combined with water and added to the mix to create concrete.

The history of concrete actually begins with a sort of naturally occurring cement that formed because of reactions between limestone and oil shale. It was first discovered in what is now Israel and is thought to date back about 12 million years. Cement has been used to build everything from the Great Wall of China to the Roman Colosseum.

Concrete blocks are an alternative construction material to brickwork with advantages and disadvantages. Because concrete blocks are larger than bricks, less cement is needed in mortar joints to hold them together. However, because of their moisture content and larger size, concrete blocks are more prone to movement and cracking when a foundation shifts than bricks are.

Hollow Concrete Blocks vs. Solid Concrete Blocks

There are two main types of concrete blocks used in the construction industry: hollow and solid. Fully solid blocks are often used for projects like paving, where stability and durability are important. You wouldn’t want to try walking on pavement full of holes.

Hollow blocks, which have holes that take up more than one-quarter (and usually more than half) of their cross-sectional area, are used when building boundary fences and other large structures. The holes make them lighter and can be useful when running wiring or piping through them. You can also run rebar through the holes for greater stability.

Hollow Concrete Blocks

Hollow concrete blocks come in three grades:

• Grade A has a minimum density of 1,500 kg/m3.
• Grade B has a density of less than 1,500 kg/m3.
• Grade C has a density greater than 1,000 kg/m3.

Grades A and B are used for load-bearing concrete block walls, while grade C is used for non-load-bearing walls.

Hollow blocks come in several types, which are detailed below.

Solid Concrete Blocks

Fully solid concrete blocks look like gray bricks but are typically larger. They’re good for creating walls that provide protection against the elements, such as strong winds.

They can also be used for projects such as garden walls and planters, retaining walls, foundations, steps, and firepits.

Solid concrete blocks are usually heavier than hollow blocks, but they can be less expensive.

Hollow concrete blocks come in a variety of sizes, such as 100 mm x 200 mm x 400 mm, 150 mm x 200 mm x 400 mm, and 200 mm x 200 mm x 400 mm. These blocks are most commonly gray but can also be found in different colors, including tan and dark red. Here are a few of the options available to you.

Stretcher Block

Concrete stretcher blocks are used in construction to connect the corner of masonry units. Their faces are laid parallel to the face of the wall.

Pillar Block

As the name implies, pillar blocks are most often used to build pillars or piers. They’re also called double corner blocks and are designed so that both ends could be left visible. Pillar blocks are the kind of blocks many people think of when they think of concrete blocks, and they are often available in large quantities at building supply stores.

Lintel Block

Also called channeled or beam blocks, lintel blocks are recognizable by their U shape. The deep grooves created by the U shape, which run along the length of these blocks, are filled with concrete and reinforcing bars. Used in preparation for lintel beams, they’re typically placed on the top of doors and windows to transfer the load pressing down from above.

A solid-bottom lintel block, such as the one pictured here, can be purchased in a 6-by-8-by-16-inch configuration.

Jamb Block

Jamb blocks are made with a shallow groove across the two holes and a deeper groove at one end. They provide space for the casing members of a window and are often used specifically in double-hung windows.

Column Block

A column block is typically a square block with a single hole. These can be stacked to create columns, with reinforcement inside.

Corner Block

Corner blocks are placed at corners, as you might expect, or at the ends of windows and door openings. The plain side is exposed to the exterior, while the stretcher side runs parallel to the wall.

Splitface Block

Splitface blocks look like pillar blocks, except one edge has a very rough, almost jagged texture that exposes the block’s inner aggregates. This block is very porous and therefore vulnerable to water damage, but it also has a lower risk of termite infestation and is less susceptible to fire.

A splitface block like the one pictured above might come in a 6-by-8-by-16-inch size.

Bullnose Block

Bullnose blocks are the same as corner blocks in their use and structure, except that they have rounded edges (which is the reason for their name).

A single bullnose block, like the one shown here, might come in a 6-by-8-by-16-inch size; a block with a double bullnose at one end is available in the same size.

Partition Block

Partition blocks are similar to concrete pillar blocks except that they are taller than they are wide. These narrow blocks look almost like wide goggles if viewed straight-on.

Your choices won’t be as diverse when it comes to solid concrete blocks as they are with hollow blocks, but you’ll still have a selection to consider that can be used for various purposes.

Fly Ash Block

Fly ash is a fine, powdery substance that forms a material similar to Portland cement when mixed with water. (Portland cement is created by mixing limestone and clay or shale that’s been finely ground or burned.) More than half the concrete placed in the United States contains fly ash.[7] Substituting fly ash for cement concrete in road projects, which require a large amount of material, can be a money-saving step.

There are two classes of fly ash:

• Class C is a high-calcium variety that’s made up of less than 2% carbon. It can constitute 15% to 40% of cement material.
• Class F has a carbon content of 5% to 10% and is a low-calcium material. It typically makes up 15% to 25% of cement material.

Using fly ash can reduce CO2 emissions, provide resistance to cold weather, and reduce cracking problems and permeability. It also can be used to create a smooth, sharply detailed surface.[7]

Fly ash, like Portland cement, is a fine powder that can act like a pigment. Particle colors can be amber, brown, gray, green, olive, red, yellow, or yellow-brown. The resulting color can vary depending on the concentration of the particles, but it’s often a shade of gray.

Fly ash bricks tend to only come in small sizes, since they become less durable the bigger they get, and are more prone to fractures and cracking at larger sizes.

Aerated Autoclaved Block

Aerated autoclaved block, known as AAC block for short, is a lightweight material that offers a high degree of sound and temperature insulation. Its fire resistance and insulating properties make it an appealing choice, though it isn’t as widely available as some other forms of concrete.

These lightweight concrete blocks are 80% air, which explains the name “aerated.” The material can be easily shaped and allows for the use of nails and screws. But it’s not as strong as some denser concrete options, so it’s not the best load-bearing concrete and often needs to be reinforced. You’ll also want to seal it with a protective finish to avoid deterioration when exposed to the elements.

These blocks are white to light gray and can be customized for use in sidewalls, partition walls, and other types of wall construction, as well as for steel pillars and infill panels. They’re available in blocks, panels, and specialty shapes such as lintel blocks and U-shaped bond beam blocks, both of which are available in different thicknesses.

Paving Block

Paving blocks are square or rectangular solid blocks used for paving, on road shoulders (where they should be painted to improve visibility), and in walkways.

Although often brick-shaped, they’re available in a variety of sizes and colors, including sandstone, tan, dark brown, charcoal, and light gray.

Cellular Lightweight Block

Cellular lightweight block is a building material that contains three components: foam, fly ash, and cement. Like AAC, it provides good insulation against sound and extreme temperatures. It’s fire-resistant, environmentally friendly, and relatively inexpensive.

These light gray blocks are made of a material that’s been around since the 1930s. They’re customizable and can be made in various sizes, as well as used for wall panels, compound walls, and parapet walls.

High-density cellular lightweight blocks can be used for load-bearing or partitioning walls; medium densities can be used for non-load-bearing brickwork.

Expanded Clay Aggregate Block

Expanded clay aggregate blocks are made up of lightweight aggregates of fly ash and cement. Waterproof and fire-resistant, their lightweight nature allows them to reduce the overall structural load by up to 50%. They also insulate well against sound and temperature.

Because this material is fired in a kiln, it can be molded into different sizes with different densities.

Concrete blocks can be useful components for different purposes in many construction projects, whether you’re laying down a roadway, building load-bearing masonry walls, or creating partition walls.

In order to choose the right product, you’ll need to take into account how you’ll be using it and the properties you want to emphasize. Different types of concrete blocks are designed to be used at different places in a structure, such as over windows or at corners. Some need more reinforcement than others, and some are better at thermal and sound insulation.

Do you want a dense aggregate or a more lightweight alternative?

Expense is another factor to take into consideration. How much do you have to spend?

Once you’ve answered these questions, you’ll be in better shape to choose the proper equipment and begin your construction project. And you’ll enjoy greater assurance that it will be safe and that you’ll get it right the first time.

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You can add images, image galleries, videos, shapes, and equations to a text box or shape. An inner ( nested ) object is automatically embedded inside text in an outer text box or shape ( parent object). As you type, it maintains its position relative to the text and moves with it.