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SBRC Survey for Teachers

After discussion with the UESF Elementary Committee, SFUSD has put together a Task Force to review and provide guidance on revisions to the TK-5 Standards Based Report Cards.  The Task Force has defined the purpose of the SFUSD K-5 SBRC as follows: to provide a concise and periodic tool for communication among teachers, families and students that includes comprehensible information about a child’s social emotional development, academic development and unique assets.  In an effort to make this tool useful to teachers and families while serving the above purpose, feedback from both groups is essential.  Thank you for taking the time to provide feedback on your experience with the SBRCs.
Are you a teacher who completes the SBRCs?

Yes 

For which grade(s) have you completed SBRCs?

How often do you use the available rubrics to inform your completion of the SBRCs?

Always 

Approximately how long do you spend completing an SBRC for one student in its entirety?

15-30 minutes 

What aspects of the SBRC do you find the most useful for communicating with families?

Within the SEB framework, the excessive reactivity of lively supplies and electrolytes as well as of EEIs is now not a requirement. On the other hand, these SEB cells enjoy ultrahigh safety and ultralow degradation beneath all scenarios as well as strong cycling stability at elevated temperatures. We hope that this unconventional technique will unleash an unlimited class of new materials for improvement of a disruptive technology of LIBs. In lithium-ion batteries, lithium ions transfer from the unfavorable electrode by way of an electrolyte to the constructive electrode during discharge.

In 1991, the Sony Corporation commercialized the first lithium-ion battery. Replacing the lithium cobalt oxide constructive electrode materials in lithium-ion batteries with a lithium steel phosphate similar to lithium iron phosphate improves cycle counts, shelf life and security, but lowers capacity. As of 2006, these 'safer' lithium-ion batteries were mainly used in electric automobiles and different giant-capacity battery applications, where safety is critical. Lithium-ion cells are vulnerable to emphasize by voltage ranges outdoors of protected ones between 2.5 and three.65/four.1/four.2 or 4.35V .

They are some of the well-liked kinds of rechargeable battery for moveable electronics, with top-of-the-line energy-to-weight ratios, high open circuit voltage, low self-discharge rate, no memory effect and a slow loss of cost when not in use. Beyond shopper electronics, lithium-ion batteries are rising in popularity for army, electric car and aerospace applications because of their excessive energy density. Attempts to develop rechargeable lithium batteries failed because of security issues. Because of the inherent instability of lithium steel, especially throughout charging, analysis shifted to a non-metallic lithium battery using lithium ions. Although slightly decrease in power density than lithium metal, lithium-ion is safe, supplied certain precautions are met when charging and discharging.

Prices will fall as Li-ion batteries discover extensive use in powering electric automobiles and provide resilience to power grids following massive renewable era capacity addition, in accordance with the analysis. Energy, in the type of electricity, is discharged from the battery cell when lithium ions flow from the unfavorable electrode, or anode, to the constructive electrode, or cathode. When the cell is charging, those ions move in the wrong way, from cathode to anode. The electrolyte consists of an natural solvent and dissolved lithium salt, it supplies the media for Li ion transport. A lithium ion battery is made from one or more particular person cells packaged together with their related protection electronics.

Significant contributors by way of the decade might be decrease manufacturing prices derived from bigger capacities. Low-price cathode compositions and better vitality density will enhance efficiencies making cells cheaper.

Exceeding this voltage vary leads to premature getting older and in safety dangers because of the reactive elements within the cells. When saved for long durations the small present draw of the protection circuitry might drain the battery under its shutoff voltage; regular chargers might then be useless because the battery management system may retain a record of this battery 'failure'. Many types of lithium-ion cells cannot be charged safely beneath zero °C, as this can lead to plating of lithium on the anode of the cell, which may cause problems corresponding to inner quick-circuit paths.

With rising oil prices, a barely larger price than the goal would possibly already obtain sufficient consumer acceptance for a successful introduction into the market. They present a high stability within the excessive-voltage range however cobalt has restricted availability in nature and is poisonous, which is a tremendous downside for mass manufacturing. Manganese offers a low-price substitution with a excessive thermal threshold and wonderful fee capabilities however limited biking conduct.

Methods of coating the fabric have been launched that make up for the poor conductivity, nevertheless it adds some processing costs to the battery. However, safety of the know-how is still a priority, service life just isn't but enough, and costs are too high. This paper summarizes the state-of-the-art of lithium-ion battery expertise for nonexperts and fosters understanding for materials scientists and course of engineers. JB Battery, china custom lithium ion battery pack manufacturer offers reliable batteries made in lithium.

Li ion batteries typically use lithium as the fabric on the optimistic electrode, and graphite at the negative electrode. However, the estimated battery value for the example HEV utility continues to be twice the worth goal established by the USABC and DOE.

Therefore, mixtures of cobalt, nickel, and manganese are sometimes used to combine one of the best properties and minimize the drawbacks. However, because of lithium insertion and extraction, the material tends to turn out to be amorphous, which limits the cycling conduct. Olivines are unhazardous and have a reasonable capacity with low fade as a result of biking, but their conductivity is low.

Lithium-ion batteries, unlike rechargeable batteries with water-primarily based electrolytes, have a doubtlessly hazardous pressurised flammable liquid electrolyte, and require strict high quality control throughout manufacture. Faulty chargers can have an effect on the security of the battery because they will destroy the battery's protection circuit. While charging at temperatures under zero °C, the unfavorable electrode of the cells will get plated with pure lithium, which may compromise the security of the entire pack. Because lithium-ion batteries can have quite a lot of constructive and negative electrode supplies, the energy density and voltage range accordingly. During charging, an exterior electrical energy supply applies an over-voltage , forcing a charging current to circulate throughout the battery from the positive to the unfavorable electrode, i.e. within the reverse path of a discharge present underneath normal conditions.

https://www.lithiumbatterychina.com/

What aspects of the SBRC do you find the LEAST useful for communicating with families?

na

What aspects of the SBRC do you think should not be changed?

na

What aspects of the SBRC would you like to see changed for the 2015-2016 school year?

na

What should be added to the SBRCs and why?

yes

What should be omitted from the SBRCs and why?

yes

Are you satisfied with the timing/ pacing of the SBRCs during the year?

Yes 

if no, then “What changes in timing or pacing of the SBRCs would you like to see?”

 

How challenging was it to use Synergy TeacherVue to complete your SBRCs?

 

What feedback do you have on using Synergy TeacherVue to complete your SBRCs?

 

What additional comments do you have that would inform the revision of our district’s SRBCs for 2014-2015?

 

Would you like to participate in hands-on revision of the SBRC as a member of the Task Force? (extended hour compensation is provided)

Yes 

If yes: “Please provide your email for more information.”

 

Any additional comments to add?

 
Created at 10/20/2020 12:04 AM  by  
Last modified at 10/20/2020 12:04 AM  by