What are concrete representations in math? In the concrete stage, the teacher begins instruction by modeling each mathematical concept with concrete materials (e.g. red and yellow chips, cubes, base ten blocks, pattern blocks, fraction bars, geometric figures). … Representational. The “seeing” stage uses representations of the objects to model problems.
What are concrete examples in math? Concrete examples are specific examples that correlate with your class learning objectives. They can help create strong connections between abstract material and your current understanding. Concrete examples can be found in your class lectures, class materials, and from your peers.
What is concrete stage math? The first step is called the concrete stage. It is known as the “doing” stage and involves physically manipulating objects to solve a math problem. The representational (semi-concrete) stage is the next step. It is known as the “seeing” stage and involves using images to represent objects to solve a math problem.
What are representations in maths? As most commonly interpreted in education, mathematical representations are visible or tangible productions – such as diagrams, number lines, graphs, arrangements of concrete objects or manipulatives, physical models, mathematical expressions, formulas and equations, or depictions on the screen of a computer or …
What are concrete representations in math? – Related Questions
How to remove salt stains from concrete?
Spray affected areas with water to get them wet. Fill a bucket with warm water and add vinegar and/or dish soap/detergent. Dip the broom into the water and use it to scrub the surface of the concrete. Scrub for several minutes until the salt residue and stains start to lift.
How to prep concrete floor for staining?
Apply Concrete Cleaner and Degreaser: The vast majority of concrete slabs only require minimum cleaning using an organic degreaser diluted at a medium concentration with water. Scrub Surface: Clean the surface with a soft nylon bristle brush or power wash on a low setting to prepare most floors for staining.
How long to wait before removing concrete forms?
Slabs, with their props left under them, can typically be removed after 3-4 days. Soffits, with their props left under them, can be removed after one week. Props supporting slabs under 15 feet can be removed after one week.
What are the red bugs found on concrete?
These small red bugs are often called “concrete mites” because they like to lay their eggs in protective cracks in concrete walls. And because they are seeking shelter inside your warmer home. They have a distinct color, and look nothing like red fire ants.
What grit sandpaper to remove paint from concrete?
Using fine (120 grit) sandpaper, gently sand any areas that have been scratched or flaking paint. In addition to lightly sanding the paint, you should also give the paint a good coating of grit to ensure it is fresh.
How to make concrete splash blocks?
Mix one part cement with two parts masonry sand in a large bucket or cement mixer. Then add three parts limestone to the cement/sand mixture. Add water to the mixture slowly while mixing until the concrete mix achieves an oatmeal-like consistency.
How to attach plywood to concrete floor?
One way to attach plywood to a concrete surface is to screw it into place with concrete fasteners. Another way that involves less strain and hard work is to glue the plywood to the concrete. This only requires a few materials and will adhere the plywood very securely in place.
How to remove dried water based paint from concrete?
Using a solution of methylated spirts, pour directly onto the paint spots and proceed to work it into the concrete by means of a long-handled brush. Metho works as a solvent to dissolve water-based paint, remember to work quickly as the metho will dry rapidly once its poured onto the concrete.
What is durability properties of concrete?
Durability of concrete may be defined as the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties.
Can you add a sink on a concrete slab?
Yes, unless you want to jackhammer the concrete after it’s hardened. Theoretically only the sewer lines have to be under the slab (you remember gravity) but generally the plumber installs the water lines at the same time because water and sewer usually go to the same location.
How to get olive oil out of concrete?
Or try my home-style hint first: Sprinkle baking soda over the whole stain, then pour on liquid dish soap (one that’s a grease cutter), also covering the stain. Scrub with a plastic brush (do not use metal); let set for several hours. Rinse, and take a look. It will probably take numerous attempts to dissolve the oil.
How much does stamped concrete cost per foot?
Basic stamped concrete costs between $8 and $12 per square foot, but more involved projects can be as expensive as $18 per square foot.
What is workability of concrete pdf?
Workability of concrete is the property of freshly mixed concrete which determines the ease and homogeneity with which it can be mixed, placed, consolidated and finished’ as defined by ACI Standard 116R-90 (ACI 1990b).
Do you have to wax concrete countertops?
You can wax concrete countertops more frequently in high use areas if desired. Concrete Countertop Care and Maintenance Tips: Wax monthly, or more frequently in higher use areas. Seal countertops every 6 months – 2 years depending on use.
Can you put asphalt over concrete?
It is safe to pave asphalt over concrete. Concrete is a great base material because it is stable and allows for excellent compaction of the asphalt above. In fact, many miles of concrete roads are paved over with asphalt every year.
How much to pour concrete patio?
The average cost to pour a concrete patio is $2,532 for labor and materials. Most concrete patio prices range between $1,533 and $4,740 or between $4.40 and $16 per square foot. Small-scale concrete patios average around $650, while large concrete patio installation projects cost an average of $8,050.
How do you make concrete sparke?
To make the sparkle even more prominent, he recommends integrally coloring the concrete mix. This metallic aggregate from Pacific Palette Concrete Products comes in black and white. Sparkle Grain is recommended where you want a decorative, hard, nonslip surface.
Do i need underlay on concrete floor?
If you have a concrete floor you will need an underlay which is anti-bacterial and made from rubber. Not all types of underlay will cope well with constantly being rubbed up against concrete so you may want to seek advice from carpet fitting experts before purchasing.
How much does a 2x2x4 concrete block weigh?
How much does a 2 x 2 x 4 concrete block weigh? Approximate weight of 2x2x4 is 2400 lbs. All blocks have a recessed lifting eye for easy installation.
Can you put flexible pvc conduit in concrete?
There are many different types of piping used in construction. … Rigid PVC pipes are not to be used in concrete while flexible PVC pipes can be installed in concrete.
How to carpet concrete floor?
There are many different types of piping used in construction. … Rigid PVC pipes are not to be used in concrete while flexible PVC pipes can be installed in concrete.