diff --git a/备课组/26届/校本材料.json b/备课组/26届/校本材料.json
index 701b1d1d..be824735 100644
--- a/备课组/26届/校本材料.json
+++ b/备课组/26届/校本材料.json
@@ -3613,8 +3613,8 @@
         },
         "G20260227": {
             "id": "G20260227",
-            "name": "向量的投影与数量积预选",
-            "filename": "向量的投影与数量积预选",
+            "name": "向量的投影与数量积",
+            "filename": "向量的投影与数量积",
             "objects": [
                 "K0504001B",
                 "K0504002B",
@@ -3635,10 +3635,8 @@
             "examples_basic": [
                 "018486",
                 "018487",
-                "018488",
-                "018490",
-                "018491",
-                "023628"
+                "023633",
+                "018488"
             ],
             "work_inclass": [
                 "009622",
@@ -3648,22 +3646,22 @@
             "homework": [
                 "021749",
                 "021750",
-                "021751",
-                "021752",
                 "021753",
+                "021757",
                 "021759",
-                "021763",
-                "021764",
+                "021760",
+                "021765",
                 "023631",
                 "023629",
-                "023630"
+                "023630",
+                "023628"
             ],
             "remarks": ""
         },
         "G20260228": {
             "id": "G20260228",
-            "name": "向量数量积的运算律预选",
-            "filename": "向量数量积的运算律预选",
+            "name": "向量数量积的运算律",
+            "filename": "向量数量积的运算律",
             "objects": [
                 "K0505001B",
                 "K0505002B",
@@ -3679,7 +3677,8 @@
             ],
             "examples_basic": [
                 "023632",
-                "023633",
+                "018490",
+                "018491",
                 "018489",
                 "018492",
                 "004258"
@@ -3689,10 +3688,10 @@
                 "009627"
             ],
             "homework": [
+                "021751",
                 "021756",
-                "021757",
-                "021760",
-                "021765",
+                "021763",
+                "021764",
                 "021766",
                 "021767",
                 "021768",