数学 · KS3 Y7 · Geometry & Measures

Reflecting shapes

m120免费1:32Heddy 星级 7 颗中 2 颗，未达标

从 youtube-nocookie.com 播放。按下播放之前，YouTube 不会写入任何 cookie。

你需要知道的

  • Each point and its image are the same distance from the mirror line.
  • The line joining a point to its image is perpendicular to the mirror line.
  • Lines such as y = x and x = 2 can be mirror lines.

这个短片讲了

3:18–4:09Estimating before calculatingm32
4:09–4:50Prime factorisationm26
8:36–9:42Fractions of amountsm4
9:42–13:12Standard form: large numbersm46
13:12–15:03Place value & orderingm1
15:03–18:29Fractions ↔ decimals ↔ %m12
18:29–20:34Negative numbersm2
20:34–22:23Simplifying expressionsm6
22:23–23:25Substituting into expressionsm56
23:25–24:15Inequalities on a number linem72
24:15–24:53Solving linear inequalitiesm73
24:53–30:03Solving quadratics by factorisingmh8
30:03–33:54Graphs of quadraticsm85
33:54–35:24nth term of linear sequencesm70
35:24–37:50Metric unit conversionsm91
37:50–40:14Percentages of amountsm38
40:14–46:10Percentage increase & decreasem39
46:10–49:03Ratio notationm7
49:03–50:40The unitary methodm90
50:40–58:16Speed, distance, timem96
58:16–60:35Density as a ratem97
60:35–62:07Reflecting shapesm120
62:07–67:10Plans & elevationsm146
67:10–69:41Angles in polygonsm16
69:41–70:42Volume of cuboidsm117
70:42–71:27Volume of cylindersm140
71:27–73:24Exact trigonometric valuesgcse-math-g21
73:24–74:45Pictograms & their keysm164
74:45–79:19Bar chartsm163
80:33–82:12Probability of single eventsm18
82:12–84:20Frequency treesm159
也讲到Adding fractions, unlike denominatorsm34
也讲到Calculating in standard formm48
也讲到Direct proportion y = kxm102
Heddy 星级2/7, 未达标
  • 可信来源 · 已通过. 创作者本人上传，链接有效，可以在这里播放。
  • 对准知识点 · 待评. 老师看过：它主要讲的就是这个知识点。
  • 符合考纲 · 待评. 内容准确，符合现行英国考纲。
  • 聚焦 · 已通过. 只讲一个概念，短到可以一口气看完。
  • 无障碍 · 待评. 字幕可靠，声音和画面清楚。
  • 适合青少年 · 待评. 适合 11 到 16 岁的学生，没有推销。
  • 有成效 · 待评. 由我们的学生评出：看了学得会、觉得有帮助、愿意看到最后。
★ 已通过 · ☆ 待评 · ✕ 未通过
我们的学生

学生人数还不够

我们自己学生的回答，第 7 颗星“有成效”就由这些决定。
Heddy 星级怎么评

为什么选它

Topic-by-topic Foundation revision built around the May 2023 Paper 1; many chapters are KS3-level skills, useful for Year 9–11 Foundation students.

YouTube 频道：The GCSE Maths Tutor2026-10-16 核对