diff --git a/quarto/precalc/variables.qmd b/quarto/precalc/variables.qmd
index 3e86674..2da3e34 100644
--- a/quarto/precalc/variables.qmd
+++ b/quarto/precalc/variables.qmd
@@ -95,7 +95,7 @@ $$
 	\left(\frac{g}{k v_0\cos(\theta)} + \tan(\theta) \right) t + \frac{g}{k^2}\ln\left(1 - \frac{k}{v_0\cos(\theta)} t \right)
 $$
 
-Here $g$ is the gravitational constant $9.8$ and $v_0$, $\theta$ and $k$ parameters, which we take to be $200$, $45$ degrees, and $1/2$ respectively. With these values, the above expression can be computed when $s=100$:
+Here $g$ is the gravitational constant $9.8$ and $v_0$, $\theta$ and $k$ parameters, which we take to be $200$, $45$ degrees, and $1/2$ respectively. With these values, the above expression can be computed when $t=100$:
 
 
 ```{julia}
@@ -232,7 +232,7 @@ These notes can be presented as HTML files *or* as `Pluto` notebooks. They often
 
 :::{.callout-note}
 ## Emojis
-There is even support for tab-completion of [emojis](https://github.com/JuliaLang/julia/blob/master/stdlib/REPL/src/emoji_symbols.jl) such as `\\:snowman:[tab]` or `\\:koala:[tab]`
+There is even support for tab-completion of [emojis](https://github.com/JuliaLang/julia/blob/master/stdlib/REPL/src/emoji_symbols.jl) such as `\:snowman:[tab]` or `\:koala:[tab]`
 
 :::