Counting blocks amazon: Montessori Toys for Toddlers, Wooden Math Number Blocks Counting and Manipulative Toys, Basic Math Game Preschool Learning Educational Materials for Toddlers Ki… in 2022
Posted onThe World of Math in a Building Block
Learning through play
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All-New SumBlox Original Starter Set (38)
Regular price
$74.95
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$69.95
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All-New SumBlox Original Basic Set (76)
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$134.95
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$124.95
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SumBlox Educational Package
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$294.95
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$245.95
Booster Pack of SumBlox One to Ten
$25.95
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Set of 50 single blocks
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$29.95
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$25.95
Individual Original Size Blocks
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SumBlox Mini — Starter Set & Pack of 36 Activity Cards
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$44.95
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$39.95
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SumBlox Mini — Basic Set & Pack of 80 Activity Cards
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$79.95
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Math Blocks
SumBlox are an innovative way to develop math skills. Learning to count, add, subtract, multiply and much more is as simple as stacking building blocks. SumBlox are solid wood stacking number blocks designed to improve numeracy and make learning more accessible, more fun, and more exciting. They encourage both hand-eye coordination and improve motor skills. Smaller sets of SumBlox will introduce individual children to learning with SumBlox and larger sets allow exploration of more complex concepts, and further cooperation with other learners.
There is endless potential to learn with building blocks, and the freedom to create something beautiful is confined only to your imagination! Currently sold around the world.
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100% Natural Hard Wood Products
SumBlox are crafted from Artisan Quality Solid Beechwood. They are made to last a lifetime.
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Jordan Shapiro — October 2014
Featured in Forbes
«SumBlox is one of those ideas that seems so simple it is hard to believe nobody’s thought of it before. These wooden blocks, shaped like digits with the heights that correspond to number values, create a playful way for young children to explore basic arithmetic.»
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This is one of the best products I have ever seen to help young children learn about numbers and basic arithmetic.
Professor Keith Devlin (Stanford Mathematician, Author & NPR ‘Math guy’)
SumBlox are engaging and entertaining, children can learn through play, either on their own or with other children. Teachers can use them in their classrooms to teach basic math skills. In essence, SumBlox is a creative learning tool that enables children to play and to do the work of childhood.
Dr. Jean Lau Chin (Ed. D, School Psychology, Adelphi University Professor)
These beautiful wooden numbers are open-ended and allow children to self-direct their learning. These numbers bring math exploration to life. My youngest, middle and oldest child all use them productively and in their own unique way.
Lizzie Assa, MsED (@theworkspaceforchildren)
Intuitive For Counting To Long Division – Digi-Block Store
Digi-Block is a base-ten model that kids BUILD BY THEMSELVES.
Kids use specially-designed boxes (“holders”) to assemble single blocks into blocks-of-10; then they assemble these blocks-of-10 to make blocks-of-100, and they assemble block-of-100 to make blocks-of-1000.
“Ten ones is one ten.”
The key to PLACE-VALUE is to think of “ten” in two different ways – as one thing and as ten things. With Digi-Block, this potentially confusing duality becomes physically obvious: a block-of-ten looks like one thing, but when it’s open, it looks like ten things! Children who work with Digi-Block develop a natural, intuitive understanding of place value.
The blocks pack and unpack, NO TRADING involved.
Since the blocks pack and unpack, regrouping becomes child’s play: “Carrying” amounts to closing a box, and “borrowing” to opening a box. NO TRADING is required!
The structure of «BLOCKS-WITHIN-BLOCKS» makes long-division physically obvious.
Mistake-proof and designed for self-discovery.
A holder clicks shut only when there are ten blocks inside. This feature allows kids to focus on physically performing the operations by packing and unpacking blocks, with the full confidence that the physical outcome will show the correct result of the mathematical operation. (E.g., they can be sure that every block-of-100 that they created contains 100 single blocks, even though they cannot see inside.
)
Smooth transition to written numbers.
The “Counter” is a device that organizes the blocks in places, one for each size, with a digit (0 to 9) underneath each place. It provides a physical demonstration of how a collection of blocks is represented by a written number. A key feature is that inserting a tenth block into a hanging holder causes the holder to eject! This feature fascinates children, who love to add blocks one at a time and observe how the digits progress from 000 to 999.
Seamless transition to decimal fractions.
The pattern is always the same – inside a block-of-1,000 there are ten blocks-of-100, inside a block-of-100 there are ten blocks-of-10, and inside a block-of-10 there are ten single blocks. A child who has worked with the blocks for some time, finds it natural to extend this pattern downwards – inside a single block there should be ten smaller blocks (tenths) and inside each of these there should be ten even smaller blocks (hundredths).
Note: Due to limitations of plastics technology, we are unable to build the single blocks so they actually contain ten smaller blocks inside. Instead, we provide loose tenths blocks, ten of which — when aligned next to one another — are exactly the size of a single block. Our experience shows that kids who are familiar with packing and unpacking blocks of 10 and blocks of 100, have no trouble dealing with the single blocks as if they truly packed and unpacked.
Digi-Block come in three different styles.
Classic Blocks
The classic blocks are opaque and they all have the same (green) color. This means that all the blocks (one, ten, hundred, etc) look identical except for their size. Multiplication by ten then amounts to an enlargement of the picture, and therefore to a shift of the digits!
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Power Blocks
For young children, who are not yet ready for the idea of shifting orders of magnitude, it may be advantageous not to start with the classical blocks.
Multi-colored blocks (“Power Blocks”) provide a gentle introduction. The different colors allow children to add and subtract sets of blocks representing two or even three-digit numbers, without having to address potentially confusing expressions such as “three tens and five ones” – instead, they can think about “three blues and five greens.”
Transparent Blocks
Transparent blocks have the advantage that you can see inside. This makes things simpler, and therefore appropriate for very young children or special-needs students. However, the advantage turns into a disadvantage when moving on to the abstraction that “ten ones is one ten”, which is at the heart of the base-ten system. To grasp this abstraction, it is preferable that the blocks be opaque.
Digi-Trains help very young children make the first steps in learning the base-10 system.
Digi Trains help very young children learn to confidently count, add, and subtract numbers up to one hundred, without first having to learn the symbols for the digits 1, 2, …, 9, let alone the abstraction of zero! The idea is to only speak the numbers, not write them, and to rely on the trains to emphasize the rhythm of the spoken count.
Single blocks are loaded into open holders (“cars”) that are placed behind an engine. There is only one rule for making a good train: “Move the blocks as far forward as possible!” Counting the blocks on a train, with a beat on the last block in each car, naturally leads kids to discover the advantage of counting by tens. Kids love putting trains together and taking them apart. In doing so, they see for themselves how addition and subtraction work!
Note: For ease of presentation, the animations below include digits; but as you can see, everything can be done with just the spoken numbers. (Digits are introduced later, as follows: The first digit is the number of full cars; the second digit is the number of remaining blocks in the caboose.)
Comprehensive Teacher’s Guide
$ 36.00
Operations with Whole Numbers and Decimals
$ 48.
00
Kohlberg’s Digi-Block Mathematics
$ 48.00
Packed with Math
$ 36.00
Amazon Simple Email Service Pricing | Cloud Email Service | Amazon Web Services
Amazon SES Pricing
With AWS SES, you only pay for what you actually use. There is no minimum charge or mandatory usage level. You will be charged separately for sending and receiving email messages, data usage, and additional features. AWS SES provides transparency and low cost regardless of the use case, and you only pay for the features you use.
* You may be charged additional data transfer fees for EC2
** Use the AWS Calculator to estimate the monthly cost of using Amazon SES.
* The minimum number of own addresses is -256, which is a minimum amount of USD 24.
95 x 256 = 6387.20 per month.
** See Pricing for more information.
Email messages
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Dedicated IPs
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Managed
You can select Dedicated IPs based on actual usage rather than Dedicated IPs. Managed Dedicated IPs start at $15 per account per month (flat subscription fee) and then $0.08 per 1,000 emails. The price will drop when a certain shipment volume is reached (see pricing table above).
You can start using Managed Dedicated IPs at any time during the billing cycle and you will be charged on a per-use basis. If you no longer need to lease Dedicated IPs, you will no longer be charged.
Use Your Own IP Addresses (BYOIP)
Amazon SES includes the optional Use Your Own IP Addresses (BYOIP) feature. This feature allows you to use a set of your own IP addresses to send email using Amazon SES. If you use BYOIP, you pay $24.95 per month for each IP address in the range.
* The minimum number of own addresses is 256, which is a minimum amount of USD 24.95 x 256 = 6387.20 per month. For more information, see the Amazon SES Developer Guide.
Virtual Deliverability Manager
The Virtual Deliverability Manager is priced at $0.07 for each 1,000 emails you send, in addition to other SES charges, such as email sending fees. Accessing Virtual Deliverability Manager information through the console, CLI, or AWS API costs $0.0005 per 1,000 requests. Your first 5,000 requests each month are free.
Deliverability Dashboard
The cost of accessing the Deliverability Dashboard (via SES API V2) is fixed at $1,250 per month. This price includes reputation monitoring for up to five domains and the ability to run 25 email distribution predictive tests.
Note. If you cancel your subscription before the end of the billing period, we will continue to charge for each day remaining in that period. No fees will be charged for the next billing period.
For an additional fee of $25 per domain per month, you can monitor domains that are not in the first five domains listed. The domain monitoring data displayed in the Deliverability Dashboard provides insights into Inbox Distribution (that is, the percentage of email messages that reach your users’ mailboxes) and audience engagement rates across several major vendor domains email services. Using this information, you can quickly identify problems that could prevent email messages from being delivered to customers.
This monthly fee also includes 25 email distribution predictive tests. In addition to the 25 tests provided, you can take additional tests at a cost of $10 each. Predictive message distribution tests allow you to select email messages and send them to real mailboxes of many major email services. The results of these tests also provide information about how many messages ended up in your users’ mailboxes, how many messages were marked as spam, and how many messages were not delivered at all.
Charges for other AWS services
Monthly charges for other AWS services may apply depending on how you set up and use Amazon SES. Example
- Sending emails using an application hosted on Amazon EC2 incurs compute usage charges as well as data transfer charges from EC2. See the Amazon EC2 pricing page for details.
- Moving incoming messages to the Amazon Simple Storage Service (Amazon S3) bucket incurs storage charges. See the Amazon S3 pricing page for details.
- When you receive alerts using Amazon Simple Notification Service (Amazon SNS), you are charged per number of alerts received. See the Amazon SNS pricing page for details.
- Using custom dashboards or metrics with Amazon CloudWatch incurs an additional monthly charge based on the number of dashboards and metrics created. See the Amazon CloudWatch pricing page for details.
You can estimate your monthly charges for all AWS services using the Billing Dashboard in the AWS Management Console.
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How many servers are in the Amazon EC2 cloud? / Habr
alizar
High performance *Amazon Web Services *
Like many other Internet companies, Amazon does not disclose information about its infrastructure, including the number of servers. But an analyst from Accenture Technology Labs made his own calculation: he came up with at least 454,400 servers in seven Amazon Web Services data centers.
Interestingly, 70% of them are located in the US East region (Virginia).
| Number of server racks | Number of blade servers | |
| US East (Virginia) | 5030 | 321 920 |
| US West (Oregon) | 41 | 2624 |
| US West | 630 | 40 320 |
| EU West (Ireland) | 814 | 52 096 |
| AP Northeast (Japan) | 314 | 20 096 |
| AP Southeast (Singapore) | 246 | 15 744 |
| SA East (Sao Paulo) | 25 | 1600 |
| Total | 7100 | 454 400 |
Amazon uses a regular pattern of assigning internal IP addresses: each instance gets an address of 10.x.x.x, and each rack gets a range of 10.
x.x.x/22, so you can define all the virtual machines in that rack. The researcher scanned AWS by DNS queries inside the EC2 network using the external IP addresses of the instances, their ranges are known.
The number of blade servers was directly estimated based on information about 64 blades per rack — four 10U chassis, 16 blades on each chassis (this assumption is based on nothing).
For more information about the research methodology, see the author’s blog.
This assessment has already generated debate among experts. They argue about how many servers each rack can actually have because the company has gone through several generations of hardware. But in any case, the general opinion converges that Amazon has already surpassed all hosting providers in terms of the number of servers that publicly disclose information about the number of servers, but has not yet exactly caught up with Google, which has about 9 data centers in its network.00 thousand servers.
Also noteworthy is the rather rapid growth of Amazon’s infrastructure, the graph shows the increase in the number of racks in the US East region, over the indicated period it added an average of 110 racks per month.
