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  • Thống kê

  • truy cập   (chi tiết)
    trong hôm nay
  • lượt xem
    trong hôm nay
  • thành viên
  • Dành cho Quảng cáo

    Chào mừng quý vị đến với Thư viện Bài giảng điện tử.

    Quý vị chưa đăng nhập hoặc chưa đăng ký làm thành viên, vì vậy chưa thể tải được các tư liệu của Thư viện về máy tính của mình.
    Nếu đã đăng ký rồi, quý vị có thể đăng nhập ở ngay ô bên phải.

    vong doi cua ech

    Nhấn vào đây để tải về
    Báo tài liệu có sai sót
    Nhắn tin cho tác giả
    (Tài liệu chưa được thẩm định)
    Nguồn:
    Người gửi: Trần Thị Thúy Anh
    Ngày gửi: 09h:42' 21-03-2012
    Dung lượng: 2.9 MB
    Số lượt tải: 335
    Số lượt thích: 0 người
    Tìm hiểu
    vòng đời của con ếch
    Vịng d?i c?a ?ch
    Các món ăn được làm từ ếch
    Ech kho tộ
    Ech xào mướp hương
    Ech xào chua ngọt
    Canh ếch
    Các món ăn được làm từ ếch
    TRÒ CHƠI:
    “THI TÀI NHANH TRÍ”
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    4
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    ?
    1
    s2
    4
    3
    ?
    1
    2
    3
    4
    3211952

    cho quan sat 2 lan vong doi cua ech va sau khi tre quan sat xong, minh se hoi tre nhung dieu tre vua nhin thay. chu y nhan manh su tuan hoan, lien tuc trong vong doi cua ech, tu trung-nong noc-nong noc 2 chan- nong noc 4 chan- ech va lai tiep tuc nhu vay. neu khong nhan manh duoc su lien tuc nay thi hoat dong cua chung ta se chi la : tim hieu su phat trien cua  ech chu khong phai la : tim hieu vong doi cua ech.

    3168831

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