Lesson 4: Trend and moving averages

Trend is direction. In a simple uptrend, price tends to make higher highs and higher lows; in a downtrend, it tends to make lower highs and lower lows. A simple moving average, or SMA, is just the average price over a fixed period, plotted bar by bar as a line that moves along the chart. The longer the period, the smoother the line looks, but the more lag it adds. 1 2 3

Illustration by the channel: the same upward drift is easier to read once the daily wiggles are averaged into one smoother line.

That is why beginners should read the SMA as a cleaner view of direction, not as a prediction. It helps you see whether recent closes are drifting up or down without getting lost in every noisy candle. 1 2

Here is a simplified daily META chart rebuilt from Yahoo Finance historical prices through July 10, 2026. On the latest session, META closed at $669.21, and you can see the faster 10-day average turn sooner while the 20-day average stays smoother and reacts more slowly. 4

Mistake: treating a price move above the SMA as a buy command, or a move below it as an automatic sell command.

Better habit: ask what the line is measuring. A 10-day average is close to recent action; a 20-day average is steadier but slower. Use them to confirm direction, not to guess the next candle. Indicators describe the past; they do not guarantee the future. 1 2

Lesson 4 comes after candlesticks, timeframes, and volume. Next week we will look at support and resistance, the price areas where charts often pause or reverse. 3