blackboard for dummies

authentic and trustworthy. 　　 The famous children's mathematical exercise application MathBoard on the iPad is used to review the blackboard. Children can even write numbers directly on the blackboard by hand. This setting makes arithmetic exercises less cold and boring, with a trace of human color, easier to use and more attractive. 　　Information Communication and content construction The information tr

　After two weeks of learning Python, this is the first time to summarize. Yesterday, I found this blog, and the wind like to register, apply, and then succeed, thank the administrator.In fact, in retrospect, I was in a computer class at the first time when I approached programming. At that time only the number of words outside the physical and chemical students are main subjects, computer class (we were called Computer class or what) a week about a section of it. I can't think of the computer te

design (Domain-driven) is the mediator between entities. To give a PHP-related example, zend_form decoration and filtering can actually be seen as a simple mediator between zend_form_decorator and Zend_filter instances, both of which are validated using Zend_validate objects.When a mediator has to listen to the events of a colleague object, it is usually implemented as an observer (Observer), producing a blackboard (

Every Tuesday afternoon is an experimental high school school-based class time, I opened this year's school-based class is a robot.Speaking of robots, I have already opened the last semester, with some teaching experience, of course, this semester has laid a good foundation. The difference is that the robot used in the school period is the middle Ming, the class location in the computer room, and this semester with the robot is Lego the latest EV3, class location is just put into use of the robo

Today, I looked at the video of Zhang Xiaoxiang, I think some examples of teachers are very reasonable:Object-oriented is an important idea: who owns the data and who provides the means to manipulate the data externally.Case 1: The teacher draws a circle on the blackboardObject analysis: Teacher (Teacher), Blackboard (BlackBoard), Circle (Circle)Method Attribution Analysis: Draw Circle (Draw) This method is

: Download the full MP4 file1. Churyang Summary Micro-service is not a stone crack inside, is based on similar SOA, Blackboard, C/S and other application architectures based on the integration of Agile development, devops and other concepts based on the development of The advantages of microservices compared to traditional applications (rapid deployment, de-center, good isolation, etc.), and many disadvantages (more complex, communication

Goals you want to achieve To describe the things I do the obstacles I face Description of the result Quantitative evaluation of the results Personal achievement Story, then I will talk about the most hoped to achieve the goal of the past, the most hope to achieve the goal: to enter the university. Now the goal is: to the confused I find their own direction of life I used to be a person who was not confident, closed myself, and didn't contact with the outside

architecture has several common software architecture patterns and characteristics?A: 1. Duct/Filter Mode: Features cohesion, low coupling2. Object-oriented mode: Features built-based software development, highly modular3. Event-driven mode: The triggering of the event does not know that the build is affected by the event and does notThe processing order of a fake build4. Layered mode: Features layered communication protocols, such as the Iso/osi seven-layer network model5. Knowledge Base mode:

architecture has several common software architecture patterns and characteristics?A: 1. Duct/Filter Mode: Features cohesion, low coupling2. Object-oriented mode: Features built-based software development, highly modular3. Event-driven mode: The triggering of the event does not know that the build is affected by the event and does notThe processing order of a fake build4. Layered mode: Features layered communication protocols, such as the Iso/osi seven-layer network model5. Knowledge Base mode:

In the geometry of the drawing and drawing on the blackboard and the paper is not the same, there is no direct use of the eraser or the blackboard wipe to erase the picture, but in the geometric artboard if you draw the wrong picture or do not need a graphic, you can not let it show, so it does not hinder the continuation of the drawing. The following is an example of how to remove a drawn segment in a geom

interrupted using abstractcolleags or AbstractMediator. Target of mediators and colleagues Objects are not isolated and must collaborate with each other to complete the task. Although the mediation mode can restrict the interaction between objects, it will become very difficult to compile the aggregated classes if abuse occurs. For example, the service in Domain-Driven Design is the mediation between entities. For another PHP-related example, the Zend_Form decoration and filtering functions can

example, zend_form decoration and filtering can actually be seen as a simple mediator between zend_form_decorator and Zend_filter instances, both of which are validated using Zend_validate objects. When a mediator has to listen to the events of a colleague object, it is usually implemented as an observer (Observer), producing a blackboard (Blackboard) object, some colleagues writing, and some other collea

task. Although the mediation mode can restrict the interaction between objects, it will become very difficult to compile the aggregated classes if abuse occurs. For example, the service in Domain-Driven Design is the mediation between entities. For another PHP-related example, the Zend_Form decoration and filtering functions can be regarded as a simple mediation between Zend_Form_Decorator and Zend_Filter instances. they all use the Zend_Validate object for verification. When the mediator must