diff --git a/01-intro.html b/01-intro.html
index 0e0059ba..ff4a802d 100644
--- a/01-intro.html
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>We mentioned above that we can get other symbols in the workspace
 which relate to the types of information we can save.</p>
@@ -631,7 +631,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>We can ask the first two question in positive, encapsulate it in
 brackets, and then negate it:</p>
diff --git a/02-arrays.html b/02-arrays.html
index ce6dfbc2..2e115820 100644
--- a/02-arrays.html
+++ b/02-arrays.html
@@ -578,7 +578,7 @@ <h4 class="accordion-header" id="headingSolution1">
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   </h4>
 </button>
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+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>We need to select every other element in both dimensions. To do that,
 we define the apropriate intervals with an increment of 2:</p>
@@ -757,7 +757,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>We need to tart with row <code>2</code>, and subsequently select
 every third row:</p>
@@ -822,7 +822,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>Exercises using slicing</li>
 </ol><ul><li><p>To select all elements from 3rd to last we can use start our
diff --git a/03-loading_data.html b/03-loading_data.html
index f2bb75c8..cd23b921 100644
--- a/03-loading_data.html
+++ b/03-loading_data.html
@@ -505,7 +505,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>We already know that the colon operator as an index returns all the
 elements, so <code>patient_data(:)</code> will return a vector with all
@@ -808,7 +808,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Using the power matlab has to compare arrays, we can check which
 patients have a <code>max</code> equal to the <code>global_max</code>.
diff --git a/04-plotting.html b/04-plotting.html
index c7bba926..a854cb5d 100644
--- a/04-plotting.html
+++ b/04-plotting.html
@@ -451,7 +451,7 @@ <h4 class="accordion-header" id="headingSolution1">
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 </button>
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+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The first part for the mean remains unchanged:</p>
 <div class="codewrapper sourceCode" id="cb7">
diff --git a/06-func.html b/06-func.html
index e4dee56d..13e1a4f0 100644
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 <h3 class="code-label">MATLAB<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
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index a1011785..3c9b0d1d 100644
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diff --git a/08-cond.html b/08-cond.html
index c48461c1..b5848032 100644
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   Show me the solution
   </h4>
 </button>
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="codewrapper sourceCode" id="cb19">
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diff --git a/aio.html b/aio.html
index bd6c4888..e4b81472 100644
--- a/aio.html
+++ b/aio.html
@@ -561,7 +561,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>We mentioned above that we can get other symbols in the workspace
 which relate to the types of information we can save.</p>
@@ -680,7 +680,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>We can ask the first two question in positive, encapsulate it in
 brackets, and then negate it:</p>
@@ -1251,7 +1251,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>We need to select every other element in both dimensions. To do that,
 we define the apropriate intervals with an increment of 2:</p>
@@ -1432,7 +1432,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>We need to tart with row <code>2</code>, and subsequently select
 every third row:</p>
@@ -1503,7 +1503,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>Exercises using slicing</li>
@@ -1818,7 +1818,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>We already know that the colon operator as an index returns all the
 elements, so <code>patient_data(:)</code> will return a vector with all
@@ -2125,7 +2125,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Using the power matlab has to compare arrays, we can check which
 patients have a <code>max</code> equal to the <code>global_max</code>.
@@ -2341,7 +2341,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The first part for the mean remains unchanged:</p>
 <div class="codewrapper sourceCode" id="cb7">
@@ -3162,7 +3162,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 </button>
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-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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diff --git a/files/intro_slides.pdf b/files/intro_slides.pdf
index 2d1abc5f..466674de 100644
Binary files a/files/intro_slides.pdf and b/files/intro_slides.pdf differ
diff --git a/instructor-notes.html b/instructor-notes.html
index 3b14ca06..826cdd9b 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
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   Suggested Timing
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ul>
 <li>10 min for intro slides</li>
diff --git a/instructor/01-intro.html b/instructor/01-intro.html
index 303871c4..a39c84a1 100644
--- a/instructor/01-intro.html
+++ b/instructor/01-intro.html
@@ -515,7 +515,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>We mentioned above that we can get other symbols in the workspace
 which relate to the types of information we can save.</p>
@@ -632,7 +632,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>We can ask the first two question in positive, encapsulate it in
 brackets, and then negate it:</p>
diff --git a/instructor/02-arrays.html b/instructor/02-arrays.html
index 7fada6d6..8a018b80 100644
--- a/instructor/02-arrays.html
+++ b/instructor/02-arrays.html
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>We need to select every other element in both dimensions. To do that,
 we define the apropriate intervals with an increment of 2:</p>
@@ -758,7 +758,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>We need to tart with row <code>2</code>, and subsequently select
 every third row:</p>
@@ -823,7 +823,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>Exercises using slicing</li>
 </ol><ul><li><p>To select all elements from 3rd to last we can use start our
diff --git a/instructor/03-loading_data.html b/instructor/03-loading_data.html
index bb95018a..d38029cf 100644
--- a/instructor/03-loading_data.html
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>We already know that the colon operator as an index returns all the
 elements, so <code>patient_data(:)</code> will return a vector with all
@@ -809,7 +809,7 @@ <h4 class="accordion-header" id="headingSolution2">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Using the power matlab has to compare arrays, we can check which
 patients have a <code>max</code> equal to the <code>global_max</code>.
diff --git a/instructor/04-plotting.html b/instructor/04-plotting.html
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 <div class="accordion-body">
 <p>The first part for the mean remains unchanged:</p>
 <div class="codewrapper sourceCode" id="cb7">
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index 60c790a9..e6528672 100644
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diff --git a/instructor/07-loops.html b/instructor/07-loops.html
index 93e924af..b09d345d 100644
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diff --git a/instructor/08-cond.html b/instructor/08-cond.html
index 4b2c6308..27022399 100644
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 </button>
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diff --git a/instructor/aio.html b/instructor/aio.html
index 2c97a1a8..c7220651 100644
--- a/instructor/aio.html
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   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="accordion-body">
 <p>We mentioned above that we can get other symbols in the workspace
 which relate to the types of information we can save.</p>
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   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <p>We can ask the first two question in positive, encapsulate it in
 brackets, and then negate it:</p>
@@ -1251,7 +1251,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <div class="accordion-body">
 <p>We need to select every other element in both dimensions. To do that,
 we define the apropriate intervals with an increment of 2:</p>
@@ -1432,7 +1432,7 @@ <h4 class="accordion-header" id="headingSolution2">
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   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>We need to tart with row <code>2</code>, and subsequently select
 every third row:</p>
@@ -1503,7 +1503,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>Exercises using slicing</li>
@@ -1819,7 +1819,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="accordion-body">
 <p>We already know that the colon operator as an index returns all the
 elements, so <code>patient_data(:)</code> will return a vector with all
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Using the power matlab has to compare arrays, we can check which
 patients have a <code>max</code> equal to the <code>global_max</code>.
@@ -2343,7 +2343,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The first part for the mean remains unchanged:</p>
 <div class="codewrapper sourceCode" id="cb7">
@@ -3166,7 +3166,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Show me the solution
   </h4>
 </button>
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 </button>
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 </button>
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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   Show me the solution
   </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 </button>
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diff --git a/instructor/instructor-notes.html b/instructor/instructor-notes.html
index 5e92915e..21965cbe 100644
--- a/instructor/instructor-notes.html
+++ b/instructor/instructor-notes.html
@@ -343,7 +343,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Suggested Timing
   </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ul>
 <li>10 min for intro slides</li>
diff --git a/pkgdown.yml b/pkgdown.yml
index 9429100f..3c1ab9d3 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.19.2
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
-last_built: 2023-11-13T09:46Z
+last_built: 2023-11-13T17:17Z