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OpenEd is an online catalog of educational assessments, homework assignments, videos, games and lesson plans aligned to every Common Core standard and several other standards, and includes the only open source formative item bank. The site offers the ability for teachers to assign resources to their students online, letting students take assessments, do homework etc on their own computers or tablets. Assignments done online are graded automatically and presented to the teacher in a mastery chart. OpenEd's slogan mentions "assessment to instruction" meaning, formative assessments given on OpenEd can access OpenEd's large catalog on a per student basis to recommend the right resource to each student individually. The company has stated that functionality of searching the site and most of its resources are free and will continue to be free going forward. However, the company is also distributing premium content from publishers such as Pearson and Houghton Mifflin Harcourt to teachers for $9.95 per month.Currently 450,000 teachers or about 15% of all USA teachers are registered users. Recently, the company has been providing its resources with alignments to other tech companies. The API for finding standard and skill-aligned resources is used by ed tech leaders such as ACT (test), Pearson PLC, Pacific Metrics and many more.

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  1. P

    Viessmann combi starts when cold, mixer, tap is opened

    Recently had a Viessmann Vitodens combi boiler installed, quite often when the adjacent cold mixer tap is opened the boiler starts for a few seconds! Can anyone tell me what is causing this? And how to cure?
    • Plumdim
    • Thread
    • cold combi combi boiler mixer mixer tap opened starts tap viessmann
    • Replies: 3
    • Forum: USA
  2. W

    Combi boiler - bang when hot water opened

    Hi All! I hope you can give me some advise. I had combi boiler (Viessman vitodens 100-w 30kW) installed about half year ago. Recently I start hearing one single bang when hot water is opened at any of taps around house. It sound like someone in other room will knock a radiator (not relly loud...
  3. B

    Hello. I worked on an oil boiler that when the outside door is closed the burner goes to lockout. When it is opened slightly it works perfectly. Ha

    Hello. I worked on an oil boiler that when the outside door is closed the burner goes to lockout. When it is opened slightly it works perfectly. Has been working fine in same situation for 20 years. I replaced the gasket at the burner and replaced the fire board on heat exchanger access door...
    • Boilerman35
    • Thread
    • america boiler burner closed hello lockout oil oil boiler opened outside slightly usa worked works
    • Replies: 4
    • Forum: USA
  4. C

    radiator valve that can't be opened.

    Hi there, I recently moved in a new house and there is a radiator that can't be opened. There is no head on the valve and I can't opened it with a pair of pliers. here is what the valve look like. does it need a special head to be open like a TRV or does it happen that sometimes that...
    • ced46589
    • Thread
    • america can't opened radiator usa valve
    • Replies: 8
    • Forum: USA
  5. J

    Condense bosch boiler tries ignition with no taps of warm water opened.

    It is a 4 years old boiler without issues so far,but now it keeps trying ignition with no reason and displays EA error code.When we open the warm water tap it works well with no disturbances.A tehnician will arrive next monday but we wont to have an advice by this forum members.Thanks.
  6. S

    Heating coming on when TRV opened...

    I have a Vaillant Ecotec pro 28 combi boiler controlled via a BG Hive thermostat. The whole CH system is only about 8 months old. I had to put the heating on for the first time in about 4 months the other day and it came on just fine via the Hive system. I then went round and opened the...
  7. S

    how to seal a very slow dripping joint. Can't be tightened further or opened

    There is drop of water dripping every 10 minutes from a joint between socket and valve. (as shown in the picture). This was put in place using ptfe tape and tightened to the end. It cannot be tightened any further or remove and refitted with more tape etc. I believe the leak is so small that it...
  8. S

    Deep/loud grumbling noise when hot tap is opened

    As above, not restricted to one tap and intermittent. Unvented cylinder, just replaced multiblock and had new expansion vessel. Pressure 3 bar after multiblock, 4 bar before multiblock and expansion vessel checked empty at 3.25bar. Only seems to be on hot outlets. Any ideas?
  9. H

    Gas engineer/plumber needed SE1 London

    I am looking for someone to assist with a problem I have at my flat in London. I have had an Ideal logic 24 in my flat for about 4 years. In the last month or 2 it has started needing the pressure topping up every 2 days. Its under warranty so Ideal came out and replaced the flow turbine, sump...
  10. M

    Previous Plumber left filling loop opened

    Hello AllI manage 6 apartments in the same building and recent repairs to the plumbing and boilers and subsequent replacement of a boiler I noticed that these were becoming a lot more frequent and Following my inspection of the apartments I seen that the filling loop was still connected to...
  11. M

    Flow problems with Watermill wasp 66 shower pump

    Hi Can anyone help. I have a Watermill wasp 66 shower pump which has been running great for 4 years. For the last few days it will only run when shower valve is opened slowly and then gradually opened fully. Any advice would be great Thanks
  12. K

    Noisy water flow

    Hello newbie here and looking for help please We are getting a new bathroom fitted , and since the new bath tap (reinosa bath single mixer ) was fitted there is a roaring / wooshing noise travelling through the pipes to the tap. The noise is worse on cold than hot. When the tap is opened a...
  13. B

    Opened a pressie early

    Me and the mrs kiddie free tonight so the fires on , having a cheeky beer and we've swapped a stocking filler and she's got me this glass , has anyone besides lame opened a pressie early
  14. S

    Trv opened on frost setting

    Went to a boiler breakdown today, a rad had been taken off and the trv was on the frost setting (did not have "0") and last night it had opened and flooded kitchen. No blank fitted! Was it really that cold last night?????
  15. S

    Tap washers changed but leaking

    Afternoon all, Kitchen sink mixer tap. Took heads off, removed tap inards, changed washers. The brass inards now leak when the taps are opened. I have taken these apart there dont seem to be any washers or o rings but do come apart by turning (just a male thread into a female fitting where the...
  16. G

    water hammer when kitchen sink cold tap opened ??

    hiya lads can anyone shed any light on this , when kitchen sink tap is opened there is an almighty water hammer shudder through the pipework which travels all the way to the stop tap in the bedroom , its a second floor flat and besides muffling the pipes is there anything i can try to stop this...
    • gazmacker
    • Thread
    • cold hammer kitchen kitchen sink opened problem sink tap washer water water hammer
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  17. G

    Cold water pressure in bathroom

    I am having problems with the cold water supply in my bathroom. To start with the toilet takes ages to fill once it has been flushed i understand this could be a washer problem but also the cold tap on the bath trickles out if opened more than half way and finally the shower which is a Mira...
    • gates1979
    • Thread
    • bathroom cold cold water could opened pressure supply water water pressure
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  18. C

    Sabre/Vokera 24-28 HE combi. Only gets to ignition when inner case opened.

    This boiler is driving me nuts, I have spent hours trying to sort it, cost me a fortune on the phone to vokera tech who to be honest seem to be quite hostile at times, (anyone else feel that way?) The problem is everything works fine, pump runs, fan runs, APS works but no spark, open the...
  19. S

    Hot tap in bathroom hot at first then goes cold when fully opened

    Hello Ive just moved into a new flat & have noticed the hot water tap in the bathroom is fine at first but turn's cold when I open it up fully, all the other hot water taps are fine. I'm a bit worried there might be a problem with the boiler & could get quite expensive. Does anyone have any...
  20. T

    Worcester 9.24 RSF electronic, Advice please

    Heya guys Basically I got called out to a Worcester 9.24 RSF electronic, Its was firing on the CH But not on HW, So I looked to the diverter Valve on it And sure enough the spindle on it was stiff and it was not pressing the microswitch when a hot tap was opened, I removed it and replaced it...
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