Presentation Assistants is one platform for live code, drawing boards, terminals, polls, quizzes and voice, all synced to every audience device in real time. No installs. No scrolling slides past the back row. Presentation Assistants 将实时代码、白板、终端、投票、测验与语音整合在一个平台，所有内容实时同步到每位观众的设备。无需安装，也不再让后排同学错过任何细节。
Six tightly integrated tools, all synced in real time to every audience device. 六大紧密集成的工具，实时同步到每位观众的设备。
Multi-file, multi-language editing with syntax highlighting. Keystrokes stream to the audience as you type, or let them code along with you. 支持多文件、多语言编辑和语法高亮。每次按键即时推送给观众，或让观众与你同步编码。
Sketch diagrams, annotate screenshots, or solve problems on the fly. Every stroke appears on every audience screen instantly. 随手画图、批注截图或现场推导。每一笔都即时出现在所有观众屏幕上。
Run commands, compile, debug in a terminal that streams to the whole room. No more craning necks to read 12-point text. 运行命令、编译、调试，终端内容实时同步，再也不用挤到前排才能看清代码。
Multiple-choice, open-ended, marble-jar visualizations. Launch in one click, see results roll in live, and measure understanding. 选择题、开放题、弹珠可视化，一键发起，实时查看结果，精准衡量理解程度。
Audience members ask questions anonymously. Upvote what matters most, and answer when the moment is right. 观众可匿名提问，听众投票出最关心的问题，你可以在合适的时机回应。
Let AI transcribe, translate, and summarize as you speak, or invite your audience to join the conversation with voice. AI 边听边转写、翻译与总结，或邀请观众用语音参与讨论。
Run a live coding session where every attendee sees your IDE in their own browser, and can follow along or submit back. 开启实时编码课堂，每位学员在自己的浏览器中看到你的编辑器，还能同步跟练或提交作业。
Stop asking "does that make sense?" Start seeing exactly who gets it, and who needs another pass. 别再问“听懂了吗？”，看见谁掌握、谁还需要再来一次。
A collaborative drawing board that streams every stroke to your audience. Sketch a concept, annotate a slide, walk through a diagram. Everyone sees it exactly as you do. 协作白板将每一笔实时推送到观众端。草图、批注、讲解图示，观众看到的画面与你一模一样。
No downloads. No complicated setup. Works on anything with a browser. 无需下载、免繁琐配置，任何浏览器即用即开。
Sign up free, give your session a name, and pick the tools you want: code editor, drawing board, polls, or all of the above. 免费注册、给会话命名，然后挑选需要的工具：代码编辑器、白板、投票，或全部启用。
Send your audience a short URL or QR code. They join instantly. No accounts, no installs, no friction. 把短链接或二维码发给观众，他们无需账号即可即时加入。
Type, draw, run commands, launch polls. Every keystroke and stroke lands on the audience side in milliseconds. 输入、绘图、运行命令、发起投票，每一次操作都在毫秒内同步给观众。
Teach computer science, math, or design with tools that turn every seat into a front-row seat. 讲授计算机、数学或设计课程，让每个座位都变成“前排”。
Run live coding sessions, collect submissions, and track understanding across cohorts. 组织实时编码课程，收集作业并追踪学员掌握情况。
Replace dead slides with working code, sketches, and live pulse-checks. Everyone aligned in real time. 用实时代码、草图与即时反馈代替静态幻灯片，让全员步调一致。
Give audiences something to do besides stare. Push demos, polls, and Q&A straight to their phones. 让观众不再只是旁观，演示、投票和提问直接推送到他们的手机。
Free to start. No credit card required. 免费开始，无需信用卡。